diff --git a/Makefile b/Makefile
index 3866b44..43a8d93 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ test:
 test-docker: .build-docker
 	$(CONTAINER_CMD) run --device /dev/fuse --cap-add SYS_ADMIN $(CONTAINER_OPTS) --rm -it -v $(CURDIR):/go/src/github.com/ceph/go-ceph $(DOCKER_CI_IMAGE)
 
-.build-docker:
+.build-docker: Dockerfile entrypoint.sh
 	$(CONTAINER_CMD) build -t $(DOCKER_CI_IMAGE) .
 	@$(CONTAINER_CMD) inspect -f '{{.Id}}' $(DOCKER_CI_IMAGE) > .build-docker