diff --git a/go.mod b/go.mod
index c06aa50..e2c18ec 100644
--- a/go.mod
+++ b/go.mod
@@ -3,11 +3,11 @@ module github.com/yyoshiki41/rdeadcode
 go 1.24.1
 
 require (
-	golang.org/x/tools v0.31.0
+	golang.org/x/tools v0.34.0
 	rsc.io/script v0.0.2
 )
 
 require (
-	golang.org/x/mod v0.24.0 // indirect
-	golang.org/x/sync v0.12.0 // indirect
+	golang.org/x/mod v0.25.0 // indirect
+	golang.org/x/sync v0.15.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 429b01b..e6d553b 100644
--- a/go.sum
+++ b/go.sum
@@ -1,10 +1,10 @@
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-golang.org/x/mod v0.24.0 h1:ZfthKaKaT4NrhGVZHO1/WDTwGES4De8KtWO0SIbNJMU=
-golang.org/x/mod v0.24.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
-golang.org/x/sync v0.12.0 h1:MHc5BpPuC30uJk597Ri8TV3CNZcTLu6B6z4lJy+g6Jw=
-golang.org/x/sync v0.12.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
-golang.org/x/tools v0.31.0 h1:0EedkvKDbh+qistFTd0Bcwe/YLh4vHwWEkiI0toFIBU=
-golang.org/x/tools v0.31.0/go.mod h1:naFTU+Cev749tSJRXJlna0T3WxKvb1kWEx15xA4SdmQ=
+golang.org/x/mod v0.25.0 h1:n7a+ZbQKQA/Ysbyb0/6IbB1H/X41mKgbhfv7AfG/44w=
+golang.org/x/mod v0.25.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
+golang.org/x/sync v0.15.0 h1:KWH3jNZsfyT6xfAfKiz6MRNmd46ByHDYaZ7KSkCtdW8=
+golang.org/x/sync v0.15.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
+golang.org/x/tools v0.34.0 h1:qIpSLOxeCYGg9TrcJokLBG4KFA6d795g0xkBkiESGlo=
+golang.org/x/tools v0.34.0/go.mod h1:pAP9OwEaY1CAW3HOmg3hLZC5Z0CCmzjAF2UQMSqNARg=
 rsc.io/script v0.0.2 h1:eYoG7A3GFC3z1pRx3A2+s/vZ9LA8cxojHyCvslnj4RI=
 rsc.io/script v0.0.2/go.mod h1:cKBjCtFBBeZ0cbYFRXkRoxP+xGqhArPa9t3VWhtXfzU=