diff --git a/.github/workflows/checksum-phar.yml b/.github/workflows/checksum-phar.yml
index a7e4238343..43aa672104 100644
--- a/.github/workflows/checksum-phar.yml
+++ b/.github/workflows/checksum-phar.yml
@@ -12,13 +12,13 @@ on:
       - '.github/workflows/checksum-phar.yml'
   push:
     branches:
-      - "1.10.x"
+      - "1.11.x"
     paths:
       - 'compiler/**'
       - '.github/workflows/checksum-phar.yml'
 
 env:
-  COMPOSER_ROOT_VERSION: "1.10.x-dev"
+  COMPOSER_ROOT_VERSION: "1.11.x-dev"
 
 concurrency:
   group: checksum-phar-${{ github.head_ref || github.run_id }} # will be canceled on subsequent pushes in pull requests but not branches
@@ -37,7 +37,7 @@ jobs:
         with:
           repository: phpstan/phpstan
           path: phpstan-dist
-          ref: 1.10.x
+          ref: 1.11.x
 
       - name: "Get info"
         id: info
@@ -101,14 +101,14 @@ jobs:
       - name: "Composer dump"
         run: "composer install --no-interaction --no-progress"
         env:
-          COMPOSER_ROOT_VERSION: "1.10.x-dev"
+          COMPOSER_ROOT_VERSION: "1.11.x-dev"
 
       - name: "Compile PHAR for checksum"
         working-directory: "compiler/build"
         run: "php box.phar compile --no-parallel"
         env:
           PHAR_CHECKSUM: "1"
-          COMPOSER_ROOT_VERSION: "1.10.x-dev"
+          COMPOSER_ROOT_VERSION: "1.11.x-dev"
 
       - name: "Re-sign PHAR"
         run: "php compiler/build/resign.php tmp/phpstan.phar"