diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5c5d037c34b7f47db6ccda926f8faf3a4e404c2c..2e385cd8caf1b9e4d2ad69bb9d1d345e484be8da 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,7 +19,7 @@ lint:
 unittests:
   stage: "test"
   script:
-    - "NOSE_PROCESSES=4 ./tools/run_tests.sh"
+    - "./tools/run_tests.sh"
 
 doc:
   stage: "deploy"