diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0e60069edefc18f8ee024bf124b0c0bba16ae9f3..b1779719d7f095505b669f680313974121487e9c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,10 +12,9 @@ build:
   #   - apt update && apt -y install make autoconf
 
   script:
-    - source /data/sleipnir/opt/root/6-08.00-M2-SL7-64-gcc6.1.0/bin/thisroot.sh
     - mkdir build
     - cd build
-    - cmake3 ..
+    - cmake3 -DCMAKE_C_COMPILER=/usr/local/bin/gcc -DCMAKE_CXX_COMPILER=/usr/local/bin/g++ ..
     - make
 #  artifacts:
 #    paths: