diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index fd830d2..ee54eef 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -41,7 +41,7 @@ jobs:
           # - 2.10.1
           # 2.11 has minor breaking change, fixing some quirks in 2.10
           # - 2.11.0.4
-          - 2.11.4
+          # - 2.11.4
           # - 2.12
           - latest
         include:
@@ -60,7 +60,7 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install examples' dependencies
-      run: sudo apt install abcm2ps graphviz graphviz-dev texlive-full
+      run: sudo apt update && sudo apt install abcm2ps graphviz graphviz-dev texlive-full
     - name: Install dependencies—pip
       # pygraphviz for graphviz.py
       run: |