diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 41adee1..5804346 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -79,6 +79,8 @@ jobs:
 
       - name: QML unit tests (qmltestrunner via Qt::QuickTest)
         working-directory: framework/qml
+        env:
+          QT_QPA_PLATFORM: offscreen
         run: |
           cmake -S . -B build-tests -DBUILD_TESTING=ON
           cmake --build build-tests --target qml_unit_tests --parallel
diff --git a/examples/todo/Makefile b/examples/todo/Makefile
index 6bae3e2..fefe9ee 100644
--- a/examples/todo/Makefile
+++ b/examples/todo/Makefile
@@ -93,4 +93,4 @@ quality: build qmltest ## Run PHPStan, php-cs-fixer (check), PHPUnit, qmllint, q
 qmltest: ## Run QML unit tests (Qt::QuickTest via qmltestrunner)
 	cmake -S ../../framework/qml -B ../../framework/qml/build-tests -DBUILD_TESTING=ON
 	cmake --build ../../framework/qml/build-tests --target qml_unit_tests --parallel
-	ctest --test-dir ../../framework/qml/build-tests --output-on-failure -R qml_unit_tests
+	QT_QPA_PLATFORM=offscreen ctest --test-dir ../../framework/qml/build-tests --output-on-failure -R qml_unit_tests
diff --git a/framework/skeleton/Makefile b/framework/skeleton/Makefile
index c4b6d43..9235bb7 100644
--- a/framework/skeleton/Makefile
+++ b/framework/skeleton/Makefile
@@ -87,4 +87,4 @@ quality: build qmltest ## Run PHPStan, php-cs-fixer (check), PHPUnit, qmllint, q
 qmltest: ## Run QML unit tests (Qt::QuickTest via qmltestrunner)
 	cmake -S ../qml -B ../qml/build-tests -DBUILD_TESTING=ON
 	cmake --build ../qml/build-tests --target qml_unit_tests --parallel
-	ctest --test-dir ../qml/build-tests --output-on-failure -R qml_unit_tests
+	QT_QPA_PLATFORM=offscreen ctest --test-dir ../qml/build-tests --output-on-failure -R qml_unit_tests