diff --git a/go.mod b/go.mod
index 4c5c0e2..a2ac8a3 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ toolchain go1.25.5
 
 require (
 	github.com/Depado/bfplus v0.5.0
-	github.com/alecthomas/chroma/v2 v2.20.0
+	github.com/alecthomas/chroma/v2 v2.21.0
 	github.com/gin-gonic/gin v1.11.0
 	github.com/gorilla/feeds v1.2.0
 	github.com/onrik/logrus v0.11.0
diff --git a/go.sum b/go.sum
index 88802e2..25b579e 100644
--- a/go.sum
+++ b/go.sum
@@ -4,6 +4,8 @@ github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8v
 github.com/alecthomas/assert/v2 v2.11.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
 github.com/alecthomas/chroma/v2 v2.20.0 h1:sfIHpxPyR07/Oylvmcai3X/exDlE8+FA820NTz+9sGw=
 github.com/alecthomas/chroma/v2 v2.20.0/go.mod h1:e7tViK0xh/Nf4BYHl00ycY6rV7b8iXBksI9E359yNmA=
+github.com/alecthomas/chroma/v2 v2.21.0 h1:YVW9qQAFnQm2OFPPFQg6G/TpMxKSsUr/KUPDi/BEqtY=
+github.com/alecthomas/chroma/v2 v2.21.0/go.mod h1:NqVhfBR0lte5Ouh3DcthuUCTUpDC9cxBOfyMbMQPs3o=
 github.com/alecthomas/repr v0.5.1 h1:E3G4t2QbHTSNpPKBgMTln5KLkZHLOcU7r37J4pXBuIg=
 github.com/alecthomas/repr v0.5.1/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/bytedance/sonic v1.14.0 h1:/OfKt8HFw0kh2rj8N0F6C/qPGRESq0BbaNZgcNXXzQQ=