diff --git a/Makefile b/Makefile
index aa8e86ab..5f29b69e 100644
--- a/Makefile
+++ b/Makefile
@@ -51,6 +51,7 @@ build_all: \
 	$(foreach image, $(CRUBY_IMAGES), build_${image}) \
 	.WAIT \
 	$(foreach image, $(MISC_IMAGES), build_${image}) \
+	.WAIT \
 	$(foreach image, $(PYTHON_IMAGES), build_${image}) \
 	build_full