diff --git a/.github/workflows/test_plugin.yaml b/.github/workflows/test_plugin.yaml
index c9c7dd8..634bd98 100644
--- a/.github/workflows/test_plugin.yaml
+++ b/.github/workflows/test_plugin.yaml
@@ -17,12 +17,12 @@ jobs:
 
       - name: GIS Sources
         run: |
-          sudo add-apt-repository ppa:ubuntugis/ppa
+          sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable
 
       - name: Install QGIS
         run: |
           sudo wget -qO /etc/apt/keyrings/qgis-archive-keyring.gpg https://download.qgis.org/downloads/qgis-archive-keyring.gpg
-          sudo sh -c 'echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntu `lsb_release -c -s` main" > /etc/apt/sources.list.d/qgis.list'
+          sudo sh -c 'echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntugis `lsb_release -c -s` main" > /etc/apt/sources.list.d/qgis.list'
           sudo apt-get update
           sudo apt-get install -y qgis