diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2a41e2af3e514b964bc5ba054c01ae8137142cc3..c71b25707b2ccc50bca5557a5cb4f552edcd44eb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -30,7 +30,7 @@ validate_test:
 #  tags: 
 #    - deployer
   script:
-    - apt install tidy -y
+    - apt-get install tidy -y
     - echo "Create Validation output"
     - tidy -e *.html > validate_output.txt
     - echo "checking for errors and warnings in the html validation"