diff --git a/Makefile b/Makefile
index ab9b794..18d9e1e 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@ install:
 
 pull:
 	${GIT} pull -v origin master
-	${GIT} submodule update --init
+	${GIT} submodule update --init --recursive
 
 push: pull
 	${GIT} push origin master