diff --git a/Cargo.lock b/Cargo.lock
index 2fb563560bbbc..5d8ec0d590525 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -133,9 +133,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-dyn-abi"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6c2905bafc2df7ccd32ca3af13f0b0d82f2e2ff9dfbeb12196c0d978d5c0deb"
+checksum = "3fdff496dd4e98a81f4861e66f7eaf5f2488971848bb42d9c892f871730245c8"
 dependencies = [
  "alloy-json-abi",
  "alloy-primitives",
@@ -288,9 +288,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-json-abi"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2acb6637a9c0e1cdf8971e0ced8f3fa34c04c5e9dccf6bb184f6a64fe0e37d8"
+checksum = "5513d5e6bd1cba6bdcf5373470f559f320c05c8c59493b6e98912fbe6733943f"
 dependencies = [
  "alloy-primitives",
  "alloy-sol-type-parser",
@@ -383,9 +383,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-primitives"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b77f7d5e60ad8ae6bd2200b8097919712a07a6db622a4b201e7ead6166f02e5"
+checksum = "355bf68a433e0fd7f7d33d5a9fc2583fde70bf5c530f63b80845f8da5505cf28"
 dependencies = [
  "alloy-rlp",
  "arbitrary",
@@ -784,9 +784,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-sol-macro"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78c84c3637bee9b5c4a4d2b93360ee16553d299c3b932712353caf1cea76d0e6"
+checksum = "f3ce480400051b5217f19d6e9a82d9010cdde20f1ae9c00d53591e4a1afbb312"
 dependencies = [
  "alloy-sol-macro-expander",
  "alloy-sol-macro-input",
@@ -798,9 +798,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-sol-macro-expander"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a882aa4e1790063362434b9b40d358942b188477ac1c44cfb8a52816ffc0cc17"
+checksum = "6d792e205ed3b72f795a8044c52877d2e6b6e9b1d13f431478121d8d4eaa9028"
 dependencies = [
  "alloy-json-abi",
  "alloy-sol-macro-input",
@@ -817,9 +817,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-sol-macro-input"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18e5772107f9bb265d8d8c86e0733937bb20d0857ea5425b1b6ddf51a9804042"
+checksum = "0bd1247a8f90b465ef3f1207627547ec16940c35597875cdc09c49d58b19693c"
 dependencies = [
  "alloy-json-abi",
  "const-hex",
@@ -835,9 +835,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-sol-type-parser"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e188b939aa4793edfaaa099cb1be4e620036a775b4bdf24fdc56f1cd6fd45890"
+checksum = "954d1b2533b9b2c7959652df3076954ecb1122a28cc740aa84e7b0a49f6ac0a9"
 dependencies = [
  "serde",
  "winnow",
@@ -845,9 +845,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-sol-types"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3c8a9a909872097caffc05df134e5ef2253a1cdb56d3a9cf0052a042ac763f9"
+checksum = "70319350969a3af119da6fb3e9bddb1bce66c9ea933600cb297c8b1850ad2a3c"
 dependencies = [
  "alloy-json-abi",
  "alloy-primitives",
@@ -3573,7 +3573,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -3832,7 +3832,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -6730,7 +6730,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -8504,7 +8504,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys 0.11.0",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -9674,9 +9674,9 @@ dependencies = [
 
 [[package]]
 name = "syn-solidity"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2375c17f6067adc651d8c2c51658019cef32edfff4a982adaf1d7fd1c039f08b"
+checksum = "ff790eb176cc81bb8936aed0f7b9f14fc4670069a2d371b3e3b0ecce908b2cb3"
 dependencies = [
  "paste",
  "proc-macro2",
@@ -9741,7 +9741,7 @@ dependencies = [
  "getrandom 0.3.3",
  "once_cell",
  "rustix 1.1.2",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -9761,7 +9761,7 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2111ef44dae28680ae9752bb89409e7310ca33a8c621ebe7b106cf5c928b3ac0"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -11034,7 +11034,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index a69d750b6eb2a..6c29441366881 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -259,7 +259,7 @@ alloy-hardforks = { version = "0.3.2", default-features = false }
 alloy-op-hardforks = { version = "0.3.2", default-features = false }
 
 ## alloy-core
-alloy-dyn-abi = "1.3.1"
+alloy-dyn-abi = "1.4.1"
 alloy-json-abi = "1.3.0"
 alloy-primitives = { version = "1.3.1", features = [
     "getrandom",
diff --git a/crates/fmt/src/state/sol.rs b/crates/fmt/src/state/sol.rs
index 77670626b64b2..2522275b275f4 100644
--- a/crates/fmt/src/state/sol.rs
+++ b/crates/fmt/src/state/sol.rs
@@ -461,6 +461,11 @@ impl<'ast> State<'_, 'ast> {
         let header_style = self.config.multiline_func_header;
         let params_format = match header_style {
             MultilineFuncHeaderStyle::ParamsAlways => ListFormat::always_break(),
+            MultilineFuncHeaderStyle::All
+                if header.parameters.len() > 1 && !self.can_header_be_inlined(header) =>
+            {
+                ListFormat::always_break()
+            }
             MultilineFuncHeaderStyle::AllParams
                 if !header.parameters.is_empty() && !self.can_header_be_inlined(header) =>
             {
@@ -2429,6 +2434,8 @@ impl<'ast> State<'_, 'ast> {
     }
 
     fn can_header_be_inlined(&mut self, header: &ast::FunctionHeader<'_>) -> bool {
+        const FUNCTION: usize = 8;
+
         // ' ' + visibility
         let visibility = header.visibility.map_or(0, |v| self.estimate_size(v.span) + 1);
         // ' ' + state mutability
@@ -2445,7 +2452,8 @@ impl<'ast> State<'_, 'ast> {
                 .fold(0, |len, p| if len != 0 { len + 2 } else { 8 } + self.estimate_size(p.span))
         });
 
-        self.estimate_header_params_size(header)
+        FUNCTION
+            + self.estimate_header_params_size(header)
             + visibility
             + mutability
             + modifiers
diff --git a/crates/fmt/testdata/FunctionDefinition/all.fmt.sol b/crates/fmt/testdata/FunctionDefinition/all.fmt.sol
index 4afce0bf0f304..10272e81a04ec 100644
--- a/crates/fmt/testdata/FunctionDefinition/all.fmt.sol
+++ b/crates/fmt/testdata/FunctionDefinition/all.fmt.sol
@@ -727,7 +727,10 @@ contract FunctionOverrides is
         a = 1;
     }
 
-    function simple(address _target, bytes memory _payload)
+    function simple(
+        address _target,
+        bytes memory _payload
+    )
         internal
     {
         a = 1;
diff --git a/crates/fmt/testdata/ReprosFunctionDefs/all.120.fmt.sol b/crates/fmt/testdata/ReprosFunctionDefs/all.120.fmt.sol
new file mode 100644
index 0000000000000..c1ac1c0e42c1f
--- /dev/null
+++ b/crates/fmt/testdata/ReprosFunctionDefs/all.120.fmt.sol
@@ -0,0 +1,15 @@
+// config: line_length = 120
+// config: multiline_func_header = "all"
+contract Repros {
+    // https://github.com/foundry-rs/foundry/issues/12109
+    function calculateStreamedPercentage(
+        uint128 streamedAmount,
+        uint128 depositedAmount
+    )
+        internal
+        pure
+        returns (uint256)
+    {
+        a = 1;
+    }
+}
diff --git a/crates/fmt/testdata/ReprosFunctionDefs/original.sol b/crates/fmt/testdata/ReprosFunctionDefs/original.sol
new file mode 100644
index 0000000000000..c757d03a05900
--- /dev/null
+++ b/crates/fmt/testdata/ReprosFunctionDefs/original.sol
@@ -0,0 +1,4 @@
+contract Repros {
+    // https://github.com/foundry-rs/foundry/issues/12109
+    function calculateStreamedPercentage(uint128 streamedAmount, uint128 depositedAmount) internal pure returns (uint256) { a = 1; }
+}
diff --git a/crates/fmt/tests/formatter.rs b/crates/fmt/tests/formatter.rs
index 61ce1db6d8255..953dc6b48dbba 100644
--- a/crates/fmt/tests/formatter.rs
+++ b/crates/fmt/tests/formatter.rs
@@ -202,6 +202,7 @@ fmt_tests! {
     PragmaDirective,
     Repros,
     ReprosCalls,
+    ReprosFunctionDefs,
     ReturnStatement,
     RevertNamedArgsStatement,
     RevertStatement,