diff --git a/json/internal/utf8x/_asm/go.mod b/json/internal/utf8x/_asm/go.mod
index 2d862ec..77804ea 100644
--- a/json/internal/utf8x/_asm/go.mod
+++ b/json/internal/utf8x/_asm/go.mod
@@ -6,6 +6,6 @@ require github.com/mmcloughlin/avo v0.6.1-0.20260701065415-16419356370f
 
 require (
 	golang.org/x/mod v0.41.0 // indirect
-	golang.org/x/sync v0.23.0 // indirect
+	golang.org/x/sync v0.24.0 // indirect
 	golang.org/x/tools v0.51.0 // indirect
 )
diff --git a/json/internal/utf8x/_asm/go.sum b/json/internal/utf8x/_asm/go.sum
index d4fc0c3..6db9fc2 100644
--- a/json/internal/utf8x/_asm/go.sum
+++ b/json/internal/utf8x/_asm/go.sum
@@ -4,7 +4,7 @@ github.com/mmcloughlin/avo v0.6.1-0.20260701065415-16419356370f h1:eLpJhGSyRTsY+
 github.com/mmcloughlin/avo v0.6.1-0.20260701065415-16419356370f/go.mod h1:+Pk+j3KceMwAIGb32HZSCvkMCzJvxy6xCRk+urz7iPw=
 golang.org/x/mod v0.41.0 h1:qJmnOUb4YB+FsEuM3HcWucdZASCPGhsX6uljO6pog0c=
 golang.org/x/mod v0.41.0/go.mod h1:Ek9pY8RKWXwsWvd3rQiHYtMqkjSUV+s1Rj7j4H5Ur6o=
-golang.org/x/sync v0.23.0 h1:KameEIfc1IkluZyXWLn39Wd4tURc6GbCiISGiZm2bQk=
-golang.org/x/sync v0.23.0/go.mod h1:sUUOizhqBxiL6pEWpqNLUiaJn1ShEbZ6BBqskPbjZm0=
+golang.org/x/sync v0.24.0 h1:iqiDrGoDgyuvAKrhLQthUEzU/R378N78gXbBjxed7oA=
+golang.org/x/sync v0.24.0/go.mod h1:sUUOizhqBxiL6pEWpqNLUiaJn1ShEbZ6BBqskPbjZm0=
 golang.org/x/tools v0.51.0 h1:k4Xc/1Om9jwkBJBo4NVLMSARBoWtK10mx+W5BnXCeAI=
 golang.org/x/tools v0.51.0/go.mod h1:9eEncMayCV6zRMGhR5eZEC2iBx98qWcF1HZ9Z7wJOoA=
diff --git a/json/lexers/default-lexer/internal/strscan/_asm/go.mod b/json/lexers/default-lexer/internal/strscan/_asm/go.mod
index b89fe3d..9214570 100644
--- a/json/lexers/default-lexer/internal/strscan/_asm/go.mod
+++ b/json/lexers/default-lexer/internal/strscan/_asm/go.mod
@@ -6,6 +6,6 @@ require github.com/mmcloughlin/avo v0.6.1-0.20260701065415-16419356370f
 
 require (
 	golang.org/x/mod v0.41.0 // indirect
-	golang.org/x/sync v0.23.0 // indirect
+	golang.org/x/sync v0.24.0 // indirect
 	golang.org/x/tools v0.51.0 // indirect
 )
diff --git a/json/lexers/default-lexer/internal/strscan/_asm/go.sum b/json/lexers/default-lexer/internal/strscan/_asm/go.sum
index d4fc0c3..6db9fc2 100644
--- a/json/lexers/default-lexer/internal/strscan/_asm/go.sum
+++ b/json/lexers/default-lexer/internal/strscan/_asm/go.sum
@@ -4,7 +4,7 @@ github.com/mmcloughlin/avo v0.6.1-0.20260701065415-16419356370f h1:eLpJhGSyRTsY+
 github.com/mmcloughlin/avo v0.6.1-0.20260701065415-16419356370f/go.mod h1:+Pk+j3KceMwAIGb32HZSCvkMCzJvxy6xCRk+urz7iPw=
 golang.org/x/mod v0.41.0 h1:qJmnOUb4YB+FsEuM3HcWucdZASCPGhsX6uljO6pog0c=
 golang.org/x/mod v0.41.0/go.mod h1:Ek9pY8RKWXwsWvd3rQiHYtMqkjSUV+s1Rj7j4H5Ur6o=
-golang.org/x/sync v0.23.0 h1:KameEIfc1IkluZyXWLn39Wd4tURc6GbCiISGiZm2bQk=
-golang.org/x/sync v0.23.0/go.mod h1:sUUOizhqBxiL6pEWpqNLUiaJn1ShEbZ6BBqskPbjZm0=
+golang.org/x/sync v0.24.0 h1:iqiDrGoDgyuvAKrhLQthUEzU/R378N78gXbBjxed7oA=
+golang.org/x/sync v0.24.0/go.mod h1:sUUOizhqBxiL6pEWpqNLUiaJn1ShEbZ6BBqskPbjZm0=
 golang.org/x/tools v0.51.0 h1:k4Xc/1Om9jwkBJBo4NVLMSARBoWtK10mx+W5BnXCeAI=
 golang.org/x/tools v0.51.0/go.mod h1:9eEncMayCV6zRMGhR5eZEC2iBx98qWcF1HZ9Z7wJOoA=