diff --git a/composer.json b/composer.json
index 83e723e..8de2b05 100644
--- a/composer.json
+++ b/composer.json
@@ -24,8 +24,8 @@
 		}
 	},
 	"require": {
-		"pattern-lab/core": "^2.0.0",
-		"twig/twig":        "~1.*"
+		"pattern-lab/core": "dev-dev",
+		"twig/twig":        "~1.0"
 	},
 	"extra": {
 		"patternlab": {