diff --git a/.github/workflows/postgis.yml b/.github/workflows/postgis.yml
index 940f7d4248..fa418eb920 100644
--- a/.github/workflows/postgis.yml
+++ b/.github/workflows/postgis.yml
@@ -41,8 +41,10 @@ jobs:
           python-version: '3.13'
           cache: 'pip'
           cache-dependency-path: 'tests/requirements/py3.txt'
+      - name: Update apt repo
+        run: sudo apt update
       - name: Install libmemcached-dev for pylibmc
-        run: sudo apt install libmemcached-dev
+        run: sudo apt install -y libmemcached-dev
       - name: Install geospatial dependencies
         run: sudo apt install -y binutils libproj-dev gdal-bin
       - name: Print PostGIS versions