diff --git a/go.mod b/go.mod
index a0fe9d4..12dcbbe 100644
--- a/go.mod
+++ b/go.mod
@@ -3,9 +3,9 @@ module github.com/xiaoqidun/ofdgo
 go 1.25.0
 
 require (
-	github.com/tdewolff/canvas v0.0.0-20260708151538-b3beae08c578
+	github.com/tdewolff/canvas v0.0.0-20260714230319-248e24504c3b
 	github.com/tdewolff/font v0.0.0-20260527091451-1663e68cb8a4
-	github.com/xiaoqidun/jbig2 v0.0.0-20260714021516-ffe617d6fbc8
+	github.com/xiaoqidun/jbig2 v0.0.0-20260728034722-cddd57533c97
 	golang.org/x/image v0.44.0
 	golang.org/x/text v0.40.0
 )
diff --git a/go.sum b/go.sum
index 28fc934..320481c 100644
--- a/go.sum
+++ b/go.sum
@@ -61,8 +61,8 @@ 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 v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
-github.com/tdewolff/canvas v0.0.0-20260708151538-b3beae08c578 h1:OKVthD6KmBTDWsxnPkmDLW35yp+lvoqWsMeteXOZW+4=
-github.com/tdewolff/canvas v0.0.0-20260708151538-b3beae08c578/go.mod h1:Lz12ClttuKvo2jb1UxBfJJWmKV0LmEc8IRo/30R7z+k=
+github.com/tdewolff/canvas v0.0.0-20260714230319-248e24504c3b h1:nfrp/2YyXxBdhIKCdtNWRfy3C89CpD2LVu467JDU66w=
+github.com/tdewolff/canvas v0.0.0-20260714230319-248e24504c3b/go.mod h1:EUnkUjU6A6BOIzmtICjy/2nGxJa1oXXYLv0kVELAcYE=
 github.com/tdewolff/font v0.0.0-20260527091451-1663e68cb8a4 h1:QmSG/RtOlLPJDLJ24XHSDEu4iSgcG+s9sdRg7wTdfpk=
 github.com/tdewolff/font v0.0.0-20260527091451-1663e68cb8a4/go.mod h1:tQzLTuJVLs4Pp6Vxdn3PJ7sAe4gIuph3SBm/BmdlmR0=
 github.com/tdewolff/minify/v2 v2.24.13 h1:xrcF7gKDnUszseEY9WX9mUlZII2v2Go/QAcAwRASw58=
@@ -73,8 +73,8 @@ github.com/tdewolff/test v1.0.12 h1:7F21DqIajswxuche0geHdrUZRCWE4oko4b7bcmkkrxk=
 github.com/tdewolff/test v1.0.12/go.mod h1:XPuWBzvdUzhCuxWO1ojpXsyzsA5bFoS3tO/Q3kFuTG8=
 github.com/wcharczuk/go-chart/v2 v2.1.2 h1:Y17/oYNuXwZg6TFag06qe8sBajwwsuvPiJJXcUcLL6E=
 github.com/wcharczuk/go-chart/v2 v2.1.2/go.mod h1:Zi4hbaqlWpYajnXB2K22IUYVXRXaLfSGNNR7P4ukyyQ=
-github.com/xiaoqidun/jbig2 v0.0.0-20260714021516-ffe617d6fbc8 h1:HSruvQiN+t72xcn4VQyvB4GRCyX0dnu3+6k4DFnmPvM=
-github.com/xiaoqidun/jbig2 v0.0.0-20260714021516-ffe617d6fbc8/go.mod h1:4ieZvd1EYR3zUzaAT4H8vLDb6XO+yjnxuh33So/5iC4=
+github.com/xiaoqidun/jbig2 v0.0.0-20260728034722-cddd57533c97 h1:r9GZyTcO5Hs7y14JTShAeDp8d54jjFyCTVVgPLFz1Yk=
+github.com/xiaoqidun/jbig2 v0.0.0-20260728034722-cddd57533c97/go.mod h1:4ieZvd1EYR3zUzaAT4H8vLDb6XO+yjnxuh33So/5iC4=
 github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZqKjWU=
 github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=