diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1f661d03..72a9dcfa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,14 +11,13 @@ permissions:
 
 jobs:
   build:
-    variables:
-      QT_QPA_PLATFORM: "offscreen"
-
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         python-version: ["3.9", "3.10", "3.11", "3.12"]
+    env:
+      QT_QPA_PLATFORM: offscreen
 
     steps:
     - name: Install openGL