diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5da3b8c4de34f905dd9487b53d96fe09246e36c2..f2243265d84f10970c55ef2a58758fa3186d67fd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,12 +10,12 @@ build:
   script:
     - mkdir build
     - cd build
-    - cmake -DCMAKE_BUILD_TYPE=Debug ..
+    - cmake -DCMAKE_BUILD_TYPE=Debug -DQT_VERSION=5 ..
     - cmake --build . -j$(nproc)
     - cd ..
     - mkdir build-release
     - cd build-release
-    - cmake -DCMAKE_BUILD_TYPE=Release ..
+    - cmake -DCMAKE_BUILD_TYPE=Release -DQT_VERSION=5 ..
     - cmake --build . -j$(nproc)
   artifacts:
     paths: