diff --git a/testdata/Dockerfile b/testdata/Dockerfile
index 05c4696..81337a9 100644
--- a/testdata/Dockerfile
+++ b/testdata/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.24 AS builder
+FROM golang:1.25 AS builder
 
 ARG TARGETPLATFORM=linux/amd64
 ARG BUILDPLATFORM=linux/amd64