diff --git a/.github/workflows/sphinx_docs.yml b/.github/workflows/sphinx_docs.yml
index 399f5c9..84caa71 100644
--- a/.github/workflows/sphinx_docs.yml
+++ b/.github/workflows/sphinx_docs.yml
@@ -12,6 +12,7 @@ on:
 jobs:
   build_sphinx_job:
     runs-on: ubuntu-latest
+    container: debian:buster
 
     steps:
       - name: Get prerequisites and clone repository