diff --git a/projects/router/Dockerfile b/projects/router/Dockerfile
index dc858916..e039b638 100644
--- a/projects/router/Dockerfile
+++ b/projects/router/Dockerfile
@@ -1 +1 @@
-FROM golang:1.20.2
\ No newline at end of file
+FROM golang:1.22
diff --git a/projects/router/Makefile b/projects/router/Makefile
index c4cbb562..24d51aed 100644
--- a/projects/router/Makefile
+++ b/projects/router/Makefile
@@ -10,4 +10,4 @@ router: clone-router
 			} \
 		]\
 	}).ok || rs.status().ok"
-	$(GOVUK_DOCKER) run $@-lite make build
+	$(GOVUK_DOCKER) run --build $@-lite make build