diff --git a/go.mod b/go.mod
index f2c8807..a35aea2 100644
--- a/go.mod
+++ b/go.mod
@@ -3,8 +3,8 @@ module github.com/xiaoqidun/ofdgo
 go 1.26.0
 
 require (
-	github.com/tdewolff/canvas v0.0.0-20260901160717-dae8cd8e19a7
-	github.com/tdewolff/font v0.0.0-20260822205238-d0d2f004b117
+	github.com/tdewolff/canvas v0.0.0-20260913163248-dd4999d1c76a
+	github.com/tdewolff/font v0.0.0-20260913163313-54f98bb59ee6
 	github.com/xiaoqidun/jbig2 v1.0.0
 	golang.org/x/image v0.46.0
 	golang.org/x/text v0.42.0
diff --git a/go.sum b/go.sum
index b60c8c1..c7ff865 100644
--- a/go.sum
+++ b/go.sum
@@ -59,10 +59,10 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.12.1 h1:EuwCh5fleGS7H32xRwO3wRGT7DxrDhLAT6FF8MpWDWE=
 github.com/stretchr/testify v1.12.1/go.mod h1:MDEgiDPPsNp5cuIrHPPCyornHKgEVbtFUmoNlxoYthg=
-github.com/tdewolff/canvas v0.0.0-20260901160717-dae8cd8e19a7 h1:/EAPdALfW5LK6JdiTNTDJdWaHx7teiehPJHouJYN3iU=
-github.com/tdewolff/canvas v0.0.0-20260901160717-dae8cd8e19a7/go.mod h1:K9Ux3cwFtyAFRITZ46g7v+ORXgI3ENtQa5rL9yjNz5Y=
-github.com/tdewolff/font v0.0.0-20260822205238-d0d2f004b117 h1:5vSJjsbV9AH0U+Ex0uej8ROrpOBlOVBrw0mGlVef7oo=
-github.com/tdewolff/font v0.0.0-20260822205238-d0d2f004b117/go.mod h1:ipESUihcEdgRBhIwTRHmBTOMamccMQrp4iCxfa1aFws=
+github.com/tdewolff/canvas v0.0.0-20260913163248-dd4999d1c76a h1:Qxn+Q+tIBhRGMkWXOXhhOmJMlj7FbSmdMabXyAOtBzI=
+github.com/tdewolff/canvas v0.0.0-20260913163248-dd4999d1c76a/go.mod h1:K9Ux3cwFtyAFRITZ46g7v+ORXgI3ENtQa5rL9yjNz5Y=
+github.com/tdewolff/font v0.0.0-20260913163313-54f98bb59ee6 h1:phNTWRYLLTlPpUgxkd6FDmWLlrOzpEpQAqq1ryLXYS8=
+github.com/tdewolff/font v0.0.0-20260913163313-54f98bb59ee6/go.mod h1:ipESUihcEdgRBhIwTRHmBTOMamccMQrp4iCxfa1aFws=
 github.com/tdewolff/minify/v2 v2.24.17 h1:6AbitfVyq0M7aW6i+XL7+49DeTQZwloOMs9O574arBg=
 github.com/tdewolff/minify/v2 v2.24.17/go.mod h1:kVqn9vxXUKtlHexSNrWbYePqioOT5mc4ou/KVSMpfCM=
 github.com/tdewolff/parse/v2 v2.8.16 h1:bLk5svUOQRkW/Y2SJ+DeENSIkZBcTIkq+Atyv5D8feI=