diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 279cb1156b85d433add8a566d6c670c716f78666..31faf60e1ddeb07ea20a7d686ea75b0245c29e30 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,6 +2,7 @@ image: "flowdalic/debian-testing-dev:1.17"
 
 before_script:
   - ulimit -a
+  - nproc
   - |
     readarray TOOLS <<EOF
     c++