diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cb7a5137d403d122b99d5d60e6f67a89f5e16489..8f51e78ae8f537fc27ff681073b368c41030876b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -222,7 +222,7 @@ generate pytest timings:
       allow_failure: true
 
 python tests:
-  parallel: 3
+  parallel: 4
   extends: .base_test
   script:
     - python -m pytest --cov=nomad --cov-report term --cov-config=.coveragerc -sv tests --splits $CI_NODE_TOTAL --group=$CI_NODE_INDEX