diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1ff496f1e9838432b339c966b8d4e4e68f681d6f..f23bb711edf71381986070b8c0a64d44d66cb4b0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,9 +9,9 @@ cache:
 before_script:
   image: node:10
   script:
-  - npm install gitbook-cli -g # install gitbook
-  - gitbook fetch 3.2.3 # fetch final stable version
-  - gitbook install # add any requested plugins in book.json
+    - npm install gitbook-cli -g # install gitbook
+    - gitbook fetch 3.2.3 # fetch final stable version
+    - gitbook install # add any requested plugins in book.json
 
 test:
   image: node:10