diff --git a/test/functional/testdata/docker-context/build-arg/Dockerfile b/test/functional/testdata/docker-context/build-arg/Dockerfile
index 6db74356..a38566de 100644
--- a/test/functional/testdata/docker-context/build-arg/Dockerfile
+++ b/test/functional/testdata/docker-context/build-arg/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.19
+FROM alpine:3.20
 ARG INPUT
 RUN test -n "$INPUT"
 RUN echo "Received input $INPUT"