diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d3f77fb1..29fe1692 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ on:
 name: CI
 
 env:
-  COMPOSER_ROOT_VERSION: "10.1-dev"
+  COMPOSER_ROOT_VERSION: "10.1.x-dev"
 
 jobs:
   coding-guidelines:
diff --git a/composer.json b/composer.json
index 6e2ed05e..0b3022f8 100644
--- a/composer.json
+++ b/composer.json
@@ -63,7 +63,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-main": "10.1-dev"
+            "dev-main": "10.1.x-dev"
         }
     }
 }