diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e288eb4a62fec60a6eaa12990dee64c638b30de2..1d1b94236044f0fa3f6372a1783743c1b1dd723a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,7 +26,7 @@ qa:
 
 docs:
     stage: test
-    script: tox -e docs
+    script: git diff --raw HEAD^1 | grep docs || tox -e docs
     tags: [memopol]
 
 deploy: