diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0ab3df3e417d7d5c23ad08d0da3ffc89c381b52d..f385240896ce8b7cb710d2b68025999416ded95d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,7 +7,7 @@ before_script:
  - sh -c 'echo deb https://apt.repos.intel.com/mkl all main > /etc/apt/sources.list.d/intel-mkl.list'
  - apt-get update --yes
  - apt-get install --yes cmake build-essential intel-mkl-2019.3-062
- - /opt/intel/mkl/bin/mklvars.sh intel64
+ - source /opt/intel/mkl/bin/mklvars.sh intel64
  - echo $MKLROOT
 
 build: