diff --git a/src/test/resources/org/jvnet/hudson/plugins/platformlabeler/alpine/3.18.11/Dockerfile b/src/test/resources/org/jvnet/hudson/plugins/platformlabeler/alpine/3.18.11/Dockerfile
index 9ad8e0b0..e9d7a0d8 100644
--- a/src/test/resources/org/jvnet/hudson/plugins/platformlabeler/alpine/3.18.11/Dockerfile
+++ b/src/test/resources/org/jvnet/hudson/plugins/platformlabeler/alpine/3.18.11/Dockerfile
@@ -1 +1 @@
-FROM alpine:3.18.11
+FROM alpine:3.21.3