diff --git a/docker/test-http/Dockerfile b/docker/test-http/Dockerfile
index 35312ecef0..968e5d7509 100644
--- a/docker/test-http/Dockerfile
+++ b/docker/test-http/Dockerfile
@@ -1,7 +1,7 @@
 # The `test-http` image gets built by `pkg/kubeapply` for use by
 # various kubeapply-templated YAML files.
 
-FROM golang:1.21
+FROM golang:1.22
 COPY httptest.go /usr/local/bin/httptest.go
 RUN go build -o /usr/local/bin/httptest /usr/local/bin/httptest.go
 ENTRYPOINT ["/usr/local/bin/httptest"]