diff --git a/go.mod b/go.mod
index cdb2b23..55ec537 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module git.yetaga.in/alazyreader/libyear
 
 go 1.23.0
 
-toolchain go1.24.4
+toolchain go1.25.0
 
 require golang.org/x/mod v0.25.0