diff --git a/README.md b/README.md
index 452f40aa..03c1170a 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 	go install mvdan.cc/garble@latest
 
-Obfuscate Go code by wrapping the Go toolchain. Requires Go 1.25 or later.
+Obfuscate Go code by wrapping the Go toolchain. Requires Go 1.26 or later.
 
 	garble build [build flags] [packages]
 
diff --git a/go.mod b/go.mod
index 181cc8fa..d9b9b084 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module mvdan.cc/garble
 
-go 1.25
+go 1.26
 
 require (
 	github.com/bluekeyes/go-gitdiff v0.8.1
diff --git a/go_std_tables.go b/go_std_tables.go
index 9ca4818a..cfd67ba3 100644
--- a/go_std_tables.go
+++ b/go_std_tables.go
@@ -1,39 +1,42 @@
 // Code generated by scripts/gen_go_std_tables.go; DO NOT EDIT.
 
-// Generated from Go versions [go1.25.0].
+// Generated from Go versions [go1.26.0].
 
 package main
 
 // runtimeAndDeps contains the runtime package and all of its transitive dependencies
 // as reported by 'go list -deps'.
 var runtimeAndDeps = map[string]bool{
-	"internal/abi":              true, // go1.25
-	"internal/asan":             true, // go1.25
-	"internal/bytealg":          true, // go1.25
-	"internal/byteorder":        true, // go1.25
-	"internal/chacha8rand":      true, // go1.25
-	"internal/coverage/rtcov":   true, // go1.25
-	"internal/cpu":              true, // go1.25
-	"internal/goarch":           true, // go1.25
-	"internal/godebugs":         true, // go1.25
-	"internal/goexperiment":     true, // go1.25
-	"internal/goos":             true, // go1.25
-	"internal/msan":             true, // go1.25
-	"internal/profilerecord":    true, // go1.25
-	"internal/race":             true, // go1.25
-	"internal/runtime/atomic":   true, // go1.25
-	"internal/runtime/cgroup":   true, // go1.25
-	"internal/runtime/exithook": true, // go1.25
-	"internal/runtime/gc":       true, // go1.25
-	"internal/runtime/maps":     true, // go1.25
-	"internal/runtime/math":     true, // go1.25
-	"internal/runtime/strconv":  true, // go1.25
-	"internal/runtime/sys":      true, // go1.25
-	"internal/runtime/syscall":  true, // go1.25
-	"internal/stringslite":      true, // go1.25
-	"internal/trace/tracev2":    true, // go1.25
-	"runtime":                   true, // go1.25
-	"unsafe":                    true, // go1.25
+	"internal/abi":                   true, // go1.26
+	"internal/asan":                  true, // go1.26
+	"internal/bytealg":               true, // go1.26
+	"internal/byteorder":             true, // go1.26
+	"internal/chacha8rand":           true, // go1.26
+	"internal/coverage/rtcov":        true, // go1.26
+	"internal/cpu":                   true, // go1.26
+	"internal/goarch":                true, // go1.26
+	"internal/godebugs":              true, // go1.26
+	"internal/goexperiment":          true, // go1.26
+	"internal/goos":                  true, // go1.26
+	"internal/msan":                  true, // go1.26
+	"internal/profilerecord":         true, // go1.26
+	"internal/race":                  true, // go1.26
+	"internal/runtime/atomic":        true, // go1.26
+	"internal/runtime/cgroup":        true, // go1.26
+	"internal/runtime/exithook":      true, // go1.26
+	"internal/runtime/gc":            true, // go1.26
+	"internal/runtime/gc/scan":       true, // go1.26
+	"internal/runtime/maps":          true, // go1.26
+	"internal/runtime/math":          true, // go1.26
+	"internal/runtime/pprof/label":   true, // go1.26
+	"internal/runtime/sys":           true, // go1.26
+	"internal/runtime/syscall/linux": true, // go1.26
+	"internal/strconv":               true, // go1.26
+	"internal/stringslite":           true, // go1.26
+	"internal/trace/tracev2":         true, // go1.26
+	"math/bits":                      true, // go1.26
+	"runtime":                        true, // go1.26
+	"unsafe":                         true, // go1.26
 }
 
 // runtimeAndLinknamed contains the runtime package and all the packages
@@ -47,45 +50,48 @@ var runtimeAndDeps = map[string]bool{
 // from the runtime package via //go:linkname directives on those platforms.
 // To make sure we have coverage on all platforms, we allow duplicates.
 var runtimeAndLinknamed = []string{
-	"arena",                         // go1.25
-	"crypto/internal/boring",        // go1.25
-	"crypto/internal/boring/bcache", // go1.25
-	"crypto/internal/fips140",       // go1.25
-	"crypto/internal/sysrand",       // go1.25
-	"crypto/rand",                   // go1.25
-	"crypto/x509/internal/macos",    // go1.25
-	"internal/bytealg",              // go1.25
-	"internal/coverage/cfile",       // go1.25
-	"internal/cpu",                  // go1.25
-	"internal/godebug",              // go1.25
-	"internal/poll",                 // go1.25
-	"internal/race",                 // go1.25
-	"internal/reflectlite",          // go1.25
-	"internal/runtime/atomic",       // go1.25
-	"internal/runtime/cgroup",       // go1.25
-	"internal/runtime/maps",         // go1.25
-	"internal/sync",                 // go1.25
-	"internal/synctest",             // go1.25
-	"internal/syscall/unix",         // go1.25
-	"internal/syscall/windows",      // go1.25
-	"maps",                          // go1.25
-	"os",                            // go1.25
-	"os/signal",                     // go1.25
-	"plugin",                        // go1.25
-	"reflect",                       // go1.25
-	"runtime",                       // go1.25
-	"runtime/debug",                 // go1.25
-	"runtime/metrics",               // go1.25
-	"runtime/pprof",                 // go1.25
-	"runtime/trace",                 // go1.25
-	"sync",                          // go1.25
-	"sync/atomic",                   // go1.25
-	"sync_test",                     // go1.25
-	"syscall",                       // go1.25
-	"syscall/js",                    // go1.25
-	"time",                          // go1.25
-	"unique",                        // go1.25
-	"weak",                          // go1.25
+	"arena",                         // go1.26
+	"crypto/fips140",                // go1.26
+	"crypto/internal/boring",        // go1.26
+	"crypto/internal/boring/bcache", // go1.26
+	"crypto/internal/fips140",       // go1.26
+	"crypto/internal/sysrand",       // go1.26
+	"crypto/rand",                   // go1.26
+	"crypto/subtle",                 // go1.26
+	"crypto/x509/internal/macos",    // go1.26
+	"internal/bytealg",              // go1.26
+	"internal/coverage/cfile",       // go1.26
+	"internal/cpu",                  // go1.26
+	"internal/godebug",              // go1.26
+	"internal/poll",                 // go1.26
+	"internal/race",                 // go1.26
+	"internal/reflectlite",          // go1.26
+	"internal/runtime/atomic",       // go1.26
+	"internal/runtime/cgroup",       // go1.26
+	"internal/runtime/maps",         // go1.26
+	"internal/sync",                 // go1.26
+	"internal/synctest",             // go1.26
+	"internal/syscall/unix",         // go1.26
+	"internal/syscall/windows",      // go1.26
+	"maps",                          // go1.26
+	"os",                            // go1.26
+	"os/signal",                     // go1.26
+	"plugin",                        // go1.26
+	"reflect",                       // go1.26
+	"runtime",                       // go1.26
+	"runtime/debug",                 // go1.26
+	"runtime/metrics",               // go1.26
+	"runtime/pprof",                 // go1.26
+	"runtime/secret",                // go1.26
+	"runtime/trace",                 // go1.26
+	"sync",                          // go1.26
+	"sync/atomic",                   // go1.26
+	"sync_test",                     // go1.26
+	"syscall",                       // go1.26
+	"syscall/js",                    // go1.26
+	"time",                          // go1.26
+	"unique",                        // go1.26
+	"weak",                          // go1.26
 	// The net package linknames to the runtime, not the other way around.
 	"net",
 	// The testing package uses a //go:linkname directive pointing to testing/synctest,
@@ -94,177 +100,189 @@ var runtimeAndLinknamed = []string{
 }
 
 var compilerIntrinsics = map[string]map[string]bool{
+	"crypto/internal/constanttime": {
+		"Select":      true, // go1.26
+		"boolToUint8": true, // go1.26
+	},
 	"internal/runtime/atomic": {
-		"And":             true, // go1.25
-		"And32":           true, // go1.25
-		"And64":           true, // go1.25
-		"And8":            true, // go1.25
-		"Anduintptr":      true, // go1.25
-		"Cas":             true, // go1.25
-		"Cas64":           true, // go1.25
-		"CasRel":          true, // go1.25
-		"Casint32":        true, // go1.25
-		"Casint64":        true, // go1.25
-		"Casp1":           true, // go1.25
-		"Casuintptr":      true, // go1.25
-		"Load":            true, // go1.25
-		"Load64":          true, // go1.25
-		"Load8":           true, // go1.25
-		"LoadAcq":         true, // go1.25
-		"LoadAcq64":       true, // go1.25
-		"LoadAcquintptr":  true, // go1.25
-		"Loadint32":       true, // go1.25
-		"Loadint64":       true, // go1.25
-		"Loadp":           true, // go1.25
-		"Loaduint":        true, // go1.25
-		"Loaduintptr":     true, // go1.25
-		"Or":              true, // go1.25
-		"Or32":            true, // go1.25
-		"Or64":            true, // go1.25
-		"Or8":             true, // go1.25
-		"Oruintptr":       true, // go1.25
-		"Store":           true, // go1.25
-		"Store64":         true, // go1.25
-		"Store8":          true, // go1.25
-		"StoreRel":        true, // go1.25
-		"StoreRel64":      true, // go1.25
-		"StoreReluintptr": true, // go1.25
-		"Storeint32":      true, // go1.25
-		"Storeint64":      true, // go1.25
-		"StorepNoWB":      true, // go1.25
-		"Storeuintptr":    true, // go1.25
-		"Xadd":            true, // go1.25
-		"Xadd64":          true, // go1.25
-		"Xaddint32":       true, // go1.25
-		"Xaddint64":       true, // go1.25
-		"Xadduintptr":     true, // go1.25
-		"Xchg":            true, // go1.25
-		"Xchg64":          true, // go1.25
-		"Xchg8":           true, // go1.25
-		"Xchgint32":       true, // go1.25
-		"Xchgint64":       true, // go1.25
-		"Xchguintptr":     true, // go1.25
+		"And":             true, // go1.26
+		"And32":           true, // go1.26
+		"And64":           true, // go1.26
+		"And8":            true, // go1.26
+		"Anduintptr":      true, // go1.26
+		"Cas":             true, // go1.26
+		"Cas64":           true, // go1.26
+		"CasRel":          true, // go1.26
+		"Casint32":        true, // go1.26
+		"Casint64":        true, // go1.26
+		"Casp1":           true, // go1.26
+		"Casuintptr":      true, // go1.26
+		"Load":            true, // go1.26
+		"Load64":          true, // go1.26
+		"Load8":           true, // go1.26
+		"LoadAcq":         true, // go1.26
+		"LoadAcq64":       true, // go1.26
+		"LoadAcquintptr":  true, // go1.26
+		"Loadint32":       true, // go1.26
+		"Loadint64":       true, // go1.26
+		"Loadp":           true, // go1.26
+		"Loaduint":        true, // go1.26
+		"Loaduintptr":     true, // go1.26
+		"Or":              true, // go1.26
+		"Or32":            true, // go1.26
+		"Or64":            true, // go1.26
+		"Or8":             true, // go1.26
+		"Oruintptr":       true, // go1.26
+		"Store":           true, // go1.26
+		"Store64":         true, // go1.26
+		"Store8":          true, // go1.26
+		"StoreRel":        true, // go1.26
+		"StoreRel64":      true, // go1.26
+		"StoreReluintptr": true, // go1.26
+		"Storeint32":      true, // go1.26
+		"Storeint64":      true, // go1.26
+		"StorepNoWB":      true, // go1.26
+		"Storeuintptr":    true, // go1.26
+		"Xadd":            true, // go1.26
+		"Xadd64":          true, // go1.26
+		"Xaddint32":       true, // go1.26
+		"Xaddint64":       true, // go1.26
+		"Xadduintptr":     true, // go1.26
+		"Xchg":            true, // go1.26
+		"Xchg64":          true, // go1.26
+		"Xchg8":           true, // go1.26
+		"Xchgint32":       true, // go1.26
+		"Xchgint64":       true, // go1.26
+		"Xchguintptr":     true, // go1.26
 	},
 	"internal/runtime/maps": {
-		"bitsetFirst":                  true, // go1.25
-		"bitsetLowestSet":              true, // go1.25
-		"bitsetRemoveBelow":            true, // go1.25
-		"bitsetShiftOutLowest":         true, // go1.25
-		"ctrlGroupMatchEmpty":          true, // go1.25
-		"ctrlGroupMatchEmptyOrDeleted": true, // go1.25
-		"ctrlGroupMatchFull":           true, // go1.25
-		"ctrlGroupMatchH2":             true, // go1.25
+		"bitsetFirst":                  true, // go1.26
+		"bitsetLowestSet":              true, // go1.26
+		"bitsetRemoveBelow":            true, // go1.26
+		"bitsetShiftOutLowest":         true, // go1.26
+		"ctrlGroupMatchEmpty":          true, // go1.26
+		"ctrlGroupMatchEmptyOrDeleted": true, // go1.26
+		"ctrlGroupMatchFull":           true, // go1.26
+		"ctrlGroupMatchH2":             true, // go1.26
 	},
 	"internal/runtime/math": {
-		"MulUintptr": true, // go1.25
+		"Add64":      true, // go1.26
+		"Mul64":      true, // go1.26
+		"MulUintptr": true, // go1.26
 	},
 	"internal/runtime/sys": {
-		"Bswap32":          true, // go1.25
-		"Bswap64":          true, // go1.25
-		"Len64":            true, // go1.25
-		"Len8":             true, // go1.25
-		"OnesCount64":      true, // go1.25
-		"Prefetch":         true, // go1.25
-		"PrefetchStreamed": true, // go1.25
-		"TrailingZeros32":  true, // go1.25
-		"TrailingZeros64":  true, // go1.25
-		"TrailingZeros8":   true, // go1.25
+		"Bswap32":          true, // go1.26
+		"Bswap64":          true, // go1.26
+		"GetCallerPC":      true, // go1.26
+		"GetCallerSP":      true, // go1.26
+		"GetClosurePtr":    true, // go1.26
+		"Len64":            true, // go1.26
+		"Len8":             true, // go1.26
+		"OnesCount64":      true, // go1.26
+		"Prefetch":         true, // go1.26
+		"PrefetchStreamed": true, // go1.26
+		"TrailingZeros32":  true, // go1.26
+		"TrailingZeros64":  true, // go1.26
+		"TrailingZeros8":   true, // go1.26
 	},
 	"math": {
-		"Abs":         true, // go1.25
-		"Ceil":        true, // go1.25
-		"Copysign":    true, // go1.25
-		"FMA":         true, // go1.25
-		"Floor":       true, // go1.25
-		"Round":       true, // go1.25
-		"RoundToEven": true, // go1.25
-		"Trunc":       true, // go1.25
-		"sqrt":        true, // go1.25
+		"Abs":         true, // go1.26
+		"Ceil":        true, // go1.26
+		"Copysign":    true, // go1.26
+		"FMA":         true, // go1.26
+		"Floor":       true, // go1.26
+		"Round":       true, // go1.26
+		"RoundToEven": true, // go1.26
+		"Trunc":       true, // go1.26
+		"sqrt":        true, // go1.26
 	},
 	"math/big": {
-		"mulWW": true, // go1.25
+		"mulWW": true, // go1.26
 	},
 	"math/bits": {
-		"Add":             true, // go1.25
-		"Add64":           true, // go1.25
-		"Div":             true, // go1.25
-		"Div64":           true, // go1.25
-		"Len":             true, // go1.25
-		"Len16":           true, // go1.25
-		"Len32":           true, // go1.25
-		"Len64":           true, // go1.25
-		"Len8":            true, // go1.25
-		"Mul":             true, // go1.25
-		"Mul64":           true, // go1.25
-		"OnesCount":       true, // go1.25
-		"OnesCount16":     true, // go1.25
-		"OnesCount32":     true, // go1.25
-		"OnesCount64":     true, // go1.25
-		"OnesCount8":      true, // go1.25
-		"Reverse":         true, // go1.25
-		"Reverse16":       true, // go1.25
-		"Reverse32":       true, // go1.25
-		"Reverse64":       true, // go1.25
-		"Reverse8":        true, // go1.25
-		"ReverseBytes16":  true, // go1.25
-		"ReverseBytes32":  true, // go1.25
-		"ReverseBytes64":  true, // go1.25
-		"RotateLeft":      true, // go1.25
-		"RotateLeft16":    true, // go1.25
-		"RotateLeft32":    true, // go1.25
-		"RotateLeft64":    true, // go1.25
-		"RotateLeft8":     true, // go1.25
-		"Sub":             true, // go1.25
-		"Sub64":           true, // go1.25
-		"TrailingZeros16": true, // go1.25
-		"TrailingZeros32": true, // go1.25
-		"TrailingZeros64": true, // go1.25
-		"TrailingZeros8":  true, // go1.25
+		"Add":             true, // go1.26
+		"Add64":           true, // go1.26
+		"Div":             true, // go1.26
+		"Div64":           true, // go1.26
+		"Len":             true, // go1.26
+		"Len16":           true, // go1.26
+		"Len32":           true, // go1.26
+		"Len64":           true, // go1.26
+		"Len8":            true, // go1.26
+		"Mul":             true, // go1.26
+		"Mul64":           true, // go1.26
+		"OnesCount":       true, // go1.26
+		"OnesCount16":     true, // go1.26
+		"OnesCount32":     true, // go1.26
+		"OnesCount64":     true, // go1.26
+		"OnesCount8":      true, // go1.26
+		"Reverse":         true, // go1.26
+		"Reverse16":       true, // go1.26
+		"Reverse32":       true, // go1.26
+		"Reverse64":       true, // go1.26
+		"Reverse8":        true, // go1.26
+		"ReverseBytes16":  true, // go1.26
+		"ReverseBytes32":  true, // go1.26
+		"ReverseBytes64":  true, // go1.26
+		"RotateLeft":      true, // go1.26
+		"RotateLeft16":    true, // go1.26
+		"RotateLeft32":    true, // go1.26
+		"RotateLeft64":    true, // go1.26
+		"RotateLeft8":     true, // go1.26
+		"Sub":             true, // go1.26
+		"Sub64":           true, // go1.26
+		"TrailingZeros16": true, // go1.26
+		"TrailingZeros32": true, // go1.26
+		"TrailingZeros64": true, // go1.26
+		"TrailingZeros8":  true, // go1.26
 	},
 	"runtime": {
-		"publicationBarrier": true, // go1.25
+		"KeepAlive":            true, // go1.26
+		"memequal":             true, // go1.26
+		"publicationBarrier":   true, // go1.26
+		"slicebytetostringtmp": true, // go1.26
 	},
 	"sync": {
-		"runtime_LoadAcquintptr":  true, // go1.25
-		"runtime_StoreReluintptr": true, // go1.25
+		"runtime_LoadAcquintptr":  true, // go1.26
+		"runtime_StoreReluintptr": true, // go1.26
 	},
 	"sync/atomic": {
-		"AddInt32":              true, // go1.25
-		"AddInt64":              true, // go1.25
-		"AddUint32":             true, // go1.25
-		"AddUint64":             true, // go1.25
-		"AddUintptr":            true, // go1.25
-		"AndInt32":              true, // go1.25
-		"AndInt64":              true, // go1.25
-		"AndUint32":             true, // go1.25
-		"AndUint64":             true, // go1.25
-		"AndUintptr":            true, // go1.25
-		"CompareAndSwapInt32":   true, // go1.25
-		"CompareAndSwapInt64":   true, // go1.25
-		"CompareAndSwapUint32":  true, // go1.25
-		"CompareAndSwapUint64":  true, // go1.25
-		"CompareAndSwapUintptr": true, // go1.25
-		"LoadInt32":             true, // go1.25
-		"LoadInt64":             true, // go1.25
-		"LoadPointer":           true, // go1.25
-		"LoadUint32":            true, // go1.25
-		"LoadUint64":            true, // go1.25
-		"LoadUintptr":           true, // go1.25
-		"OrInt32":               true, // go1.25
-		"OrInt64":               true, // go1.25
-		"OrUint32":              true, // go1.25
-		"OrUint64":              true, // go1.25
-		"OrUintptr":             true, // go1.25
-		"StoreInt32":            true, // go1.25
-		"StoreInt64":            true, // go1.25
-		"StoreUint32":           true, // go1.25
-		"StoreUint64":           true, // go1.25
-		"StoreUintptr":          true, // go1.25
-		"SwapInt32":             true, // go1.25
-		"SwapInt64":             true, // go1.25
-		"SwapUint32":            true, // go1.25
-		"SwapUint64":            true, // go1.25
-		"SwapUintptr":           true, // go1.25
+		"AddInt32":              true, // go1.26
+		"AddInt64":              true, // go1.26
+		"AddUint32":             true, // go1.26
+		"AddUint64":             true, // go1.26
+		"AddUintptr":            true, // go1.26
+		"AndInt32":              true, // go1.26
+		"AndInt64":              true, // go1.26
+		"AndUint32":             true, // go1.26
+		"AndUint64":             true, // go1.26
+		"AndUintptr":            true, // go1.26
+		"CompareAndSwapInt32":   true, // go1.26
+		"CompareAndSwapInt64":   true, // go1.26
+		"CompareAndSwapUint32":  true, // go1.26
+		"CompareAndSwapUint64":  true, // go1.26
+		"CompareAndSwapUintptr": true, // go1.26
+		"LoadInt32":             true, // go1.26
+		"LoadInt64":             true, // go1.26
+		"LoadPointer":           true, // go1.26
+		"LoadUint32":            true, // go1.26
+		"LoadUint64":            true, // go1.26
+		"LoadUintptr":           true, // go1.26
+		"OrInt32":               true, // go1.26
+		"OrInt64":               true, // go1.26
+		"OrUint32":              true, // go1.26
+		"OrUint64":              true, // go1.26
+		"OrUintptr":             true, // go1.26
+		"StoreInt32":            true, // go1.26
+		"StoreInt64":            true, // go1.26
+		"StoreUint32":           true, // go1.26
+		"StoreUint64":           true, // go1.26
+		"StoreUintptr":          true, // go1.26
+		"SwapInt32":             true, // go1.26
+		"SwapInt64":             true, // go1.26
+		"SwapUint32":            true, // go1.26
+		"SwapUint64":            true, // go1.26
+		"SwapUintptr":           true, // go1.26
 	},
 }
 
diff --git a/internal/linker/patches/go1.25/0001-add-custom-magic-value.patch b/internal/linker/patches/go1.26/0001-add-custom-magic-value.patch
similarity index 84%
rename from internal/linker/patches/go1.25/0001-add-custom-magic-value.patch
rename to internal/linker/patches/go1.26/0001-add-custom-magic-value.patch
index 1ce6dad2..1aebf57a 100644
--- a/internal/linker/patches/go1.25/0001-add-custom-magic-value.patch
+++ b/internal/linker/patches/go1.26/0001-add-custom-magic-value.patch
@@ -1,4 +1,4 @@
-From 1eb3d02d33155831067ca7db2c6517108c4305ae Mon Sep 17 00:00:00 2001
+From b59e8e940e82f488d5d688277046f6cd87c75908 Mon Sep 17 00:00:00 2001
 From: pagran <pagran@protonmail.com>
 Date: Mon, 9 Jan 2023 13:30:00 +0100
 Subject: [PATCH 1/3] add custom magic value
@@ -8,7 +8,7 @@ Subject: [PATCH 1/3] add custom magic value
  1 file changed, 17 insertions(+)
 
 diff --git a/cmd/link/internal/ld/pcln.go b/cmd/link/internal/ld/pcln.go
-index ea08fd3d31..7bae9f18c5 100644
+index 08c4d4db83..ffe8fdf7a1 100644
 --- a/cmd/link/internal/ld/pcln.go
 +++ b/cmd/link/internal/ld/pcln.go
 @@ -4,6 +4,10 @@
@@ -22,7 +22,7 @@ index ea08fd3d31..7bae9f18c5 100644
  import (
  	"cmd/internal/goobj"
  	"cmd/internal/objabi"
-@@ -262,6 +266,19 @@ func (state *pclntab) generatePCHeader(ctxt *Link) {
+@@ -282,6 +286,19 @@ func (state *pclntab) generatePCHeader(ctxt *Link) {
  		if off != size {
  			panic(fmt.Sprintf("pcHeader size: %d != %d", off, size))
  		}
@@ -41,7 +41,7 @@ index ea08fd3d31..7bae9f18c5 100644
 +		header.SetUint32(ctxt.Arch, 0, garbleMagicVal)
  	}
  
- 	state.pcheader = state.addGeneratedSym(ctxt, "runtime.pcheader", size, writeHeader)
+ 	state.pcheader = state.addGeneratedSym(ctxt, "runtime.pcheader", size, int32(ctxt.Arch.PtrSize), writeHeader)
 -- 
-2.48.1
+2.53.0
 
diff --git a/internal/linker/patches/go1.25/0002-add-unexported-function-name-removing.patch b/internal/linker/patches/go1.26/0002-add-unexported-function-name-removing.patch
similarity index 91%
rename from internal/linker/patches/go1.25/0002-add-unexported-function-name-removing.patch
rename to internal/linker/patches/go1.26/0002-add-unexported-function-name-removing.patch
index 6839c270..91e4c24a 100644
--- a/internal/linker/patches/go1.25/0002-add-unexported-function-name-removing.patch
+++ b/internal/linker/patches/go1.26/0002-add-unexported-function-name-removing.patch
@@ -1,4 +1,4 @@
-From 2a691e00bc659059133cd5604c7a099981cf684c Mon Sep 17 00:00:00 2001
+From 0d8063d9af410ceb914ba75b19a98686fe5f119c Mon Sep 17 00:00:00 2001
 From: pagran <pagran@protonmail.com>
 Date: Mon, 9 Jan 2023 13:30:36 +0100
 Subject: [PATCH 2/3] add unexported function name removing
@@ -8,7 +8,7 @@ Subject: [PATCH 2/3] add unexported function name removing
  1 file changed, 42 insertions(+), 1 deletion(-)
 
 diff --git a/cmd/link/internal/ld/pcln.go b/cmd/link/internal/ld/pcln.go
-index 7bae9f18c5..b497573b15 100644
+index ffe8fdf7a1..c47b9eab72 100644
 --- a/cmd/link/internal/ld/pcln.go
 +++ b/cmd/link/internal/ld/pcln.go
 @@ -8,6 +8,10 @@ import (
@@ -22,7 +22,7 @@ index 7bae9f18c5..b497573b15 100644
  import (
  	"cmd/internal/goobj"
  	"cmd/internal/objabi"
-@@ -318,19 +322,56 @@ func walkFuncs(ctxt *Link, funcs []loader.Sym, f func(loader.Sym)) {
+@@ -335,19 +339,56 @@ func walkFuncs(ctxt *Link, funcs []loader.Sym, f func(loader.Sym)) {
  func (state *pclntab) generateFuncnametab(ctxt *Link, funcs []loader.Sym) map[loader.Sym]uint32 {
  	nameOffsets := make(map[loader.Sym]uint32, state.nfunc)
  
@@ -79,7 +79,7 @@ index 7bae9f18c5..b497573b15 100644
 +		size += int64(len(name) + 1) // NULL terminate
  	})
  
- 	state.funcnametab = state.addGeneratedSym(ctxt, "runtime.funcnametab", size, writeFuncNameTab)
+ 	state.funcnametab = state.addGeneratedSym(ctxt, "runtime.funcnametab", size, 1, writeFuncNameTab)
 -- 
-2.48.1
+2.53.0
 
diff --git a/internal/linker/patches/go1.25/0003-add-entryOff-encryption.patch b/internal/linker/patches/go1.26/0003-add-entryOff-encryption.patch
similarity index 83%
rename from internal/linker/patches/go1.25/0003-add-entryOff-encryption.patch
rename to internal/linker/patches/go1.26/0003-add-entryOff-encryption.patch
index b60a2b36..508204a3 100644
--- a/internal/linker/patches/go1.25/0003-add-entryOff-encryption.patch
+++ b/internal/linker/patches/go1.26/0003-add-entryOff-encryption.patch
@@ -1,4 +1,4 @@
-From 03342e79193875d08bf3f88154e77a453b28c076 Mon Sep 17 00:00:00 2001
+From 16b978956b323d88ef4a48dbef124304f5206e90 Mon Sep 17 00:00:00 2001
 From: pagran <pagran@protonmail.com>
 Date: Sat, 14 Jan 2023 21:36:16 +0100
 Subject: [PATCH 3/3] add entryOff encryption
@@ -8,11 +8,11 @@ Subject: [PATCH 3/3] add entryOff encryption
  1 file changed, 20 insertions(+)
 
 diff --git a/cmd/link/internal/ld/pcln.go b/cmd/link/internal/ld/pcln.go
-index b497573b15..f1021fcee3 100644
+index c47b9eab72..d58338f7c3 100644
 --- a/cmd/link/internal/ld/pcln.go
 +++ b/cmd/link/internal/ld/pcln.go
-@@ -806,6 +806,26 @@ func writeFuncs(ctxt *Link, sb *loader.SymbolBuilder, funcs []loader.Sym, inlSym
- 			sb.SetUint32(ctxt.Arch, dataoff, uint32(ldr.SymValue(fdsym)-gofuncBase))
+@@ -980,6 +980,26 @@ func writeFuncs(ctxt *Link, sb *loader.SymbolBuilder, funcs []loader.Sym, inlSym
+ 			sb.SetUint32(ctxt.Arch, dataoff, uint32(ldr.SymValue(fdsym)))
  		}
  	}
 +
@@ -39,5 +39,5 @@ index b497573b15..f1021fcee3 100644
  
  // pclntab initializes the pclntab symbol with
 -- 
-2.48.1
+2.53.0
 
diff --git a/main.go b/main.go
index 2856f3b8..222bbab1 100644
--- a/main.go
+++ b/main.go
@@ -543,8 +543,8 @@ func (f *seedFlag) Set(s string) error {
 
 func goVersionOK() bool {
 	const (
-		minGoVersion  = "go1.25.0" // the minimum Go version we support; could be a bugfix release if needed
-		unsupportedGo = "go1.26"   // the first major version we don't support
+		minGoVersion  = "go1.26.0" // the minimum Go version we support; could be a bugfix release if needed
+		unsupportedGo = "go1.27"   // the first major version we don't support
 	)
 
 	toolchainVersion := sharedCache.GoEnv.GOVERSION
diff --git a/runtime_patch.go b/runtime_patch.go
index 4002b183..875a282c 100644
--- a/runtime_patch.go
+++ b/runtime_patch.go
@@ -12,46 +12,30 @@ import (
 	ah "mvdan.cc/garble/internal/asthelper"
 )
 
-// updateMagicValue updates hardcoded value of hdr.magic
-// when verifying header in symtab.go
+// updateMagicValue updates the global constant
+// `Go120PCLnTabMagic PCLnTabMagic = 0xfffffff1`
+// to use the provided magic value integer.
+// This is the latest magic value in use as of Go 1.26.
 func updateMagicValue(file *ast.File, magicValue uint32) {
 	magicUpdated := false
 
-	// Find `hdr.magic != 0xfffffff?` in symtab.go and update to random magicValue
-	updateMagic := func(node ast.Node) bool {
-		binExpr, ok := node.(*ast.BinaryExpr)
-		if !ok || binExpr.Op != token.NEQ {
-			return true
-		}
-
-		selectorExpr, ok := binExpr.X.(*ast.SelectorExpr)
-		if !ok {
-			return true
-		}
-
-		if ident, ok := selectorExpr.X.(*ast.Ident); !ok || ident.Name != "hdr" {
-			return true
-		}
-		if selectorExpr.Sel.Name != "magic" {
-			return true
-		}
-
-		if _, ok := binExpr.Y.(*ast.BasicLit); !ok {
-			return true
-		}
-		binExpr.Y = &ast.BasicLit{
-			Kind:  token.INT,
-			Value: strconv.FormatUint(uint64(magicValue), 10),
-		}
-		magicUpdated = true
-		return false
-	}
-
 	for _, decl := range file.Decls {
-		funcDecl, ok := decl.(*ast.FuncDecl)
-		if ok && funcDecl.Name.Name == "moduledataverify1" {
-			ast.Inspect(funcDecl, updateMagic)
-			break
+		decl, ok := decl.(*ast.GenDecl)
+		if !ok || decl.Tok != token.CONST {
+			continue
+		}
+		for _, spec := range decl.Specs {
+			spec, ok := spec.(*ast.ValueSpec)
+			if !ok || len(spec.Names) != 1 || len(spec.Values) != 1 {
+				continue
+			}
+			if spec.Names[0].Name == "Go120PCLnTabMagic" {
+				spec.Values[0] = &ast.BasicLit{
+					Kind:  token.INT,
+					Value: strconv.FormatUint(uint64(magicValue), 10),
+				}
+				magicUpdated = true
+			}
 		}
 	}
 
diff --git a/scripts/gen_go_std_tables.go b/scripts/gen_go_std_tables.go
index a0577229..41eaeb42 100644
--- a/scripts/gen_go_std_tables.go
+++ b/scripts/gen_go_std_tables.go
@@ -21,7 +21,7 @@ import (
 	"text/template"
 )
 
-var goVersions = []string{"go1.25.0"}
+var goVersions = []string{"go1.26.0"}
 
 var tmplTables = template.Must(template.New("").Parse(`
 // Code generated by scripts/gen_go_std_tables.go; DO NOT EDIT.
@@ -147,7 +147,7 @@ func lines(vs versionedString) []versionedString {
 }
 
 var rxLinkname = regexp.MustCompile(`^//go:linkname .* ([^.]*)\.[^.]*$`)
-var rxIntrinsic = regexp.MustCompile(`\b(addF|alias)\("([^"]*)", "([^"]*)",`)
+var rxIntrinsic = regexp.MustCompile(`\b(add|addF|alias)\("([^"]*)", "([^"]*)",`)
 
 func main() {
 	var runtimeAndDeps []versionedString
@@ -207,7 +207,7 @@ func main() {
 				String:        name,
 				GoVersionLang: goroot.GoVersionLang,
 			}
-			if i := compilerIntrinsicsIndexByPath[path]; i == 0 {
+			if i, ok := compilerIntrinsicsIndexByPath[path]; !ok {
 				compilerIntrinsicsIndexByPath[path] = len(compilerIntrinsics)
 				compilerIntrinsics = append(compilerIntrinsics, tmplIntrinsic{
 					Path:  path,
diff --git a/testdata/script/crossbuild.txtar b/testdata/script/crossbuild.txtar
index 2535aec2..40d0f91c 100644
--- a/testdata/script/crossbuild.txtar
+++ b/testdata/script/crossbuild.txtar
@@ -1,9 +1,8 @@
 # A fairly average Go build, importing some std libraries.
 # We always build for a foreign GOOS.
-# GOOS=windows, unless the host is also windows; then linux.
-# GOARCH=arm, unless the host is also arm; then amd64.
-# Windows and ARM are both interesting,
-# and it helps with coverage as we mainly test on linux/amd64.
+# GOOS=windows, unless the host is already windows, in which case linux.
+# GOARCH=386, unless the host is already 386, in which case amd64.
+# This helps ensure good coverage for Windows and 32-bit architectures.
 #
 # We also ensure that intrinsics work as expected.
 # The compiler replaces calls to some functions with intrinsics in its ssa stage,
@@ -14,8 +13,8 @@
 # and arm64, and it is not part of the runtime nor its dependencies.
 [!windows] env GOOS=windows
 [windows] env GOOS=linux
-[!arm] env GOARCH=arm
-[arm] env GOARCH=arm64
+[!386] env GOARCH=386
+[386] env GOARCH=amd64
 exec garble build -gcflags=math/bits=-d=ssa/intrinsics/debug=1
 stderr 'intrinsic substitution for Len64.*BitLen64'
 
diff --git a/testdata/script/goversion.txtar b/testdata/script/goversion.txtar
index 7d5278ee..f32caf2b 100644
--- a/testdata/script/goversion.txtar
+++ b/testdata/script/goversion.txtar
@@ -7,12 +7,12 @@ env PATH=${WORK}/.bin${:}${PATH}
 # An empty go version.
 env TOOLCHAIN_GOVERSION=''
 ! exec garble build
-stderr 'Go version is too old; please upgrade to go1\.25\.0 or newer'
+stderr 'Go version is too old; please upgrade to go1\.26\.0 or newer'
 
 # A clearly invalid go version.
 env TOOLCHAIN_GOVERSION='bogus version'
 ! exec garble build
-stderr 'Go version "bogus" appears to be invalid or too old; use go1\.25\.0 or newer'
+stderr 'Go version "bogus" appears to be invalid or too old; use go1\.26\.0 or newer'
 
 # We should error on a devel version that's too old;
 # note that they started with the string "devel",
@@ -26,64 +26,60 @@ stderr 'Go version .* appears to be invalid or too old'
 
 # A current devel version should be fine.
 # Note that we don't look at devel version timestamps.
-env GARBLE_TEST_GOVERSION='go1.25.0'
-# TODO: we do not currently bother with supporting tip.
-# env TOOLCHAIN_GOVERSION='go version go1.26-devel_36863d6194 2025-10-17 01:07:59 -0700 linux/amd64'
-# ! exec garble build
-# stderr 'mocking the real build'
+env GARBLE_TEST_GOVERSION='go1.26.0'
 
 # We should error on a stable version that's too old.
 env TOOLCHAIN_GOVERSION='go1.14'
 ! exec garble build
-stderr 'Go version "go1\.14" is too old; please upgrade to go1\.25\.0 or newer'
+stderr 'Go version "go1\.14" is too old; please upgrade to go1\.26\.0 or newer'
 
 # We should reject a future stable version, as we don't have linker patches yet.
 # Note that we need to bump the version of Go that supposedly built it, too.
-env GARBLE_TEST_GOVERSION='go1.28.2'
-env TOOLCHAIN_GOVERSION='go1.28.2'
+env GARBLE_TEST_GOVERSION='go1.38.2'
+env TOOLCHAIN_GOVERSION='go1.38.2'
 ! exec garble build
-stderr 'Go version "go1\.28\.2" is too new; Go linker patches aren''t available for go1\.26 or later yet'
+stderr 'Go version "go1\.38\.2" is too new; Go linker patches aren''t available for go1\.27 or later yet'
 
 # We should accept custom devel strings.
-env TOOLCHAIN_GOVERSION='go1.25.0-somecustomversion'
+env TOOLCHAIN_GOVERSION='go1.26.0-somecustomversion'
 ! exec garble build
 stderr 'mocking the real build'
 
 # A stable version with a build-time GOEXPERIMENT.
 # See: https://github.com/golang/go/issues/75953
-env TOOLCHAIN_GOVERSION='go1.25.0 X:nodwarf5'
+env TOOLCHAIN_GOVERSION='go1.26.0 X:nodwarf5'
 ! exec garble build
 stderr 'mocking the real build'
 
 # The current toolchain may be older than the one that built garble.
-env GARBLE_TEST_GOVERSION='go1.25.1'
-env TOOLCHAIN_GOVERSION='go1.25.0'
+env GARBLE_TEST_GOVERSION='go1.26.1'
+env TOOLCHAIN_GOVERSION='go1.26.0'
 ! exec garble build
 stderr 'mocking the real build'
 
 # The current toolchain may be equal to the one that built garble.
-env GARBLE_TEST_GOVERSION='go1.25.0'
-env TOOLCHAIN_GOVERSION='go1.25.0'
+env GARBLE_TEST_GOVERSION='go1.26.0'
+env TOOLCHAIN_GOVERSION='go1.26.0'
 ! exec garble build
 stderr 'mocking the real build'
 
 # The current toolchain must not be newer than the one that built garble.
 env GARBLE_TEST_GOVERSION='go1.18'
-env TOOLCHAIN_GOVERSION='go1.25.0'
+env TOOLCHAIN_GOVERSION='go1.26.0'
 ! exec garble build
-stderr 'garble was built with "go1\.18" and can''t be used with the newer "go1\.25\.0"; rebuild '
+stderr 'garble was built with "go1\.18" and can''t be used with the newer "go1\.26\.0"; rebuild '
 
 # We'll error even if the difference is a minor (bugfix) level.
 # In practice it probably wouldn't matter, but in theory it could still lead to tricky bugs.
-env GARBLE_TEST_GOVERSION='go1.25.11'
-env TOOLCHAIN_GOVERSION='go1.25.14'
+env GARBLE_TEST_GOVERSION='go1.26.11'
+env TOOLCHAIN_GOVERSION='go1.26.14'
 ! exec garble build
-stderr 'garble was built with "go1\.25\.11" and can''t be used with the newer "go1\.25\.14"; rebuild '
+stderr 'garble was built with "go1\.26\.11" and can''t be used with the newer "go1\.26\.14"; rebuild '
 
 # If garble builds itself and is then used, it won't know what version built it.
 # As a fallback, we drop the comparison against the toolchain's version.
 env GARBLE_TEST_GOVERSION='bogus version'
-env TOOLCHAIN_GOVERSION='go1.25.0'
+env TOOLCHAIN_GOVERSION='go1.26.0'
 ! exec garble build
 stderr 'mocking the real build'
 -- go.mod --
diff --git a/transformer.go b/transformer.go
index b45374bc..d6da74a8 100644
--- a/transformer.go
+++ b/transformer.go
@@ -695,16 +695,20 @@ func (tf *transformer) transformCompile(args []string) ([]string, error) {
 	for i, file := range files {
 		basename := filepath.Base(paths[i])
 		log.Printf("obfuscating %s", basename)
-		if tf.curPkg.ImportPath == "runtime" {
+		switch tf.curPkg.ImportPath {
+		case "runtime":
 			if flagTiny {
 				// strip unneeded runtime code
 				stripRuntime(basename, file)
 				tf.useAllImports(file)
 			}
 			if basename == "symtab.go" {
-				updateMagicValue(file, magicValue())
 				updateEntryOffset(file, entryOffKey())
 			}
+		case "internal/abi":
+			if basename == "symtab.go" {
+				updateMagicValue(file, magicValue())
+			}
 		}
 		if err := tf.transformDirectives(file.Comments); err != nil {
 			return nil, err