diff --git a/composer.json b/composer.json
index 067efc8..a42bf92 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "php": "^7.3",
         "phpactor/class-to-file": "~0.1",
         "phpactor/composer-autoloader-extension": "~0.1",
-        "phpactor/container": "^1.0"
+        "phpactor/container": "^1.3.4"
     },
     "require-dev": {
         "ergebnis/composer-normalize": "^2.0",