diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index f686184..3e37812 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: install dependencies
-        run: sudo apt-get install emacs
+        run: sudo apt-get install emacs26
 
       - name: make
         run: make -C src/ doc