diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 872330f..e5f57a5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,7 +19,7 @@ build:
         expire_in: 100s
     script:
         - mkdir build && cd build
-        - cmake ..
+        - cmake -DCMAKE_BUILD_TYPE=Debug ..
         - make
 
 run_1D: