diff --git a/go.mod b/go.mod
index dbee6da8a..00ac83ada 100644
--- a/go.mod
+++ b/go.mod
@@ -39,7 +39,7 @@ require (
 	go.uber.org/zap v1.27.0
 	gocloud.dev v0.40.0
 	golang.org/x/net v0.44.0
-	golang.org/x/oauth2 v0.31.0
+	golang.org/x/oauth2 v0.32.0
 	google.golang.org/api v0.252.0
 	google.golang.org/genproto/googleapis/api v0.0.0-20250804133106-a7a43d27e69b
 	google.golang.org/grpc v1.76.0
diff --git a/go.sum b/go.sum
index 34794a6bb..904ca67e1 100644
--- a/go.sum
+++ b/go.sum
@@ -984,8 +984,8 @@ golang.org/x/oauth2 v0.0.0-20210313182246-cd4f82c27b84/go.mod h1:KelEdhl1UZF7XfJ
 golang.org/x/oauth2 v0.0.0-20210427180440-81ed05c6b58c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
-golang.org/x/oauth2 v0.31.0 h1:8Fq0yVZLh4j4YA47vHKFTa9Ew5XIrCP8LC6UeNZnLxo=
-golang.org/x/oauth2 v0.31.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
+golang.org/x/oauth2 v0.32.0 h1:jsCblLleRMDrxMN29H3z/k1KliIvpLgCkE6R8FXXNgY=
+golang.org/x/oauth2 v0.32.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
diff --git a/vendor/golang.org/x/oauth2/google/externalaccount/aws.go b/vendor/golang.org/x/oauth2/google/externalaccount/aws.go
index e1a735e01..f62ec99a5 100644
--- a/vendor/golang.org/x/oauth2/google/externalaccount/aws.go
+++ b/vendor/golang.org/x/oauth2/google/externalaccount/aws.go
@@ -5,7 +5,6 @@
 package externalaccount
 
 import (
-	"bytes"
 	"context"
 	"crypto/hmac"
 	"crypto/sha256"
@@ -148,13 +147,13 @@ func canonicalHeaders(req *http.Request) (string, string) {
 	}
 	sort.Strings(headers)
 
-	var fullHeaders bytes.Buffer
+	var fullHeaders strings.Builder
 	for _, header := range headers {
 		headerValue := strings.Join(lowerCaseHeaders[header], ",")
 		fullHeaders.WriteString(header)
-		fullHeaders.WriteRune(':')
+		fullHeaders.WriteByte(':')
 		fullHeaders.WriteString(headerValue)
-		fullHeaders.WriteRune('\n')
+		fullHeaders.WriteByte('\n')
 	}
 
 	return strings.Join(headers, ";"), fullHeaders.String()
diff --git a/vendor/golang.org/x/oauth2/oauth2.go b/vendor/golang.org/x/oauth2/oauth2.go
index de34feb84..3e3b63069 100644
--- a/vendor/golang.org/x/oauth2/oauth2.go
+++ b/vendor/golang.org/x/oauth2/oauth2.go
@@ -9,7 +9,6 @@
 package oauth2 // import "golang.org/x/oauth2"
 
 import (
-	"bytes"
 	"context"
 	"errors"
 	"net/http"
@@ -158,7 +157,7 @@ func SetAuthURLParam(key, value string) AuthCodeOption {
 // PKCE), https://www.oauth.com/oauth2-servers/pkce/ and
 // https://www.ietf.org/archive/id/draft-ietf-oauth-v2-1-09.html#name-cross-site-request-forgery (describing both approaches)
 func (c *Config) AuthCodeURL(state string, opts ...AuthCodeOption) string {
-	var buf bytes.Buffer
+	var buf strings.Builder
 	buf.WriteString(c.Endpoint.AuthURL)
 	v := url.Values{
 		"response_type": {"code"},
diff --git a/vendor/modules.txt b/vendor/modules.txt
index defb31043..8f9d2cb6a 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -1364,7 +1364,7 @@ golang.org/x/net/internal/timeseries
 golang.org/x/net/proxy
 golang.org/x/net/trace
 golang.org/x/net/websocket
-# golang.org/x/oauth2 v0.31.0
+# golang.org/x/oauth2 v0.32.0
 ## explicit; go 1.24.0
 golang.org/x/oauth2
 golang.org/x/oauth2/authhandler