diff --git a/Makefile b/Makefile
index 15e79707..fedf479d 100644
--- a/Makefile
+++ b/Makefile
@@ -119,7 +119,7 @@ $(WEAVEEXEC_UPTODATE): prog/weaveexec/Dockerfile prog/weaveexec/symlink $(DOCKER
 	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build -t $(WEAVEEXEC_IMAGE) prog/weaveexec
 	touch $@
 
-$(DOCKERPLUGIN_UPTODATE): prog/plugin/Dockerfile $(DOCKERPLUGIN_EXE)
+$(DOCKERPLUGIN_UPTODATE): prog/plugin/Dockerfile $(DOCKERPLUGIN_EXE) $(WEAVEEXEC_UPTODATE)
 	$(SUDO) docker build -t $(DOCKERPLUGIN_IMAGE) prog/plugin
 	touch $@