diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 18c7184..5517e56 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -9,10 +9,10 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
-        python-version: [ '3.7' ]
+        python-version: [ '3.9' ]
 
     steps:
     - name: Checkout book