diff --git a/README.md b/README.md
index 0a586c0..0947c20 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ and the possiblity to install only the needed vendors make the difference to the
  * php: ^7.4|8.0
  * [doctrine/cache][10]: ^1.10.2
  * [doctrine/common][11]: ^3.0.2
- * [psr/container][12]: ^1.0
+ * [psr/container][12]: ^1.0|^2.0
 
 ## Suggested
 
diff --git a/composer.json b/composer.json
index a150dcb..748b6c7 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "chubbyphp/chubbyphp-laminas-config-factory": "^1.0",
         "doctrine/cache": "^1.10.2",
         "doctrine/common": "^3.0.2",
-        "psr/container": "^1.0"
+        "psr/container": "^1.0|^2.0"
     },
     "require-dev": {
         "chubbyphp/chubbyphp-dev-helper": "dev-master",