diff --git a/go.mod b/go.mod
index db41221..51cfb42 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/upbound/function-rds-metrics
 
 go 1.24.0
 
-toolchain go1.24.6
+toolchain go1.25.5
 
 require (
 	github.com/alecthomas/kong v1.13.0