diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 40f1da7486da3901dca45c8604b10c9940290387_LmdpdGxhYi1jaS55bWw=..00ece27eec7644d2d190c5a7f28876bee0a6521f_LmdpdGxhYi1jaS55bWw= 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -75,7 +75,7 @@
 build-documentation:
   stage: build
   needs: []
-  image: python:3-alpine
+  image: python:3.8-alpine
   artifacts:
     paths:
     - doc/_build