diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index bb069e6a68cb5c801cd025b83c9744761861c3f5..15c85939e0629d59a0fe11e18f19a21caa6207db 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,6 +24,7 @@ centos_run:
     - ./run.sh $CI_PROJECT_DIR unused 3 pdata 0 $CI_COMMIT_REF_NAME
     - export OMP_NUM_THREADS=8
     - ./run.sh $CI_PROJECT_DIR unused 1 pdata 0 $CI_COMMIT_REF_NAME
+    - export OMP_NUM_THREADS=1
     - cd openfpm_numerics
     - ./run.sh $CI_PROJECT_DIR unused 1 0 0 numerics $CI_COMMIT_REF_NAME
     - ./run.sh $CI_PROJECT_DIR unused 2 0 0 numerics $CI_COMMIT_REF_NAME
@@ -81,6 +82,7 @@ ubuntu_run:
     - ./run.sh $CI_PROJECT_DIR unused 3 pdata 0 $CI_COMMIT_REF_NAME
     - export OMP_NUM_THREADS=8
     - ./run.sh $CI_PROJECT_DIR unused 1 pdata 0 $CI_COMMIT_REF_NAME
+    - export OMP_NUM_THREADS=1
     - cd openfpm_numerics
     - ./run.sh $CI_PROJECT_DIR unused 1 0 0 numerics $CI_COMMIT_REF_NAME
     - ./run.sh $CI_PROJECT_DIR unused 2 0 0 numerics $CI_COMMIT_REF_NAME