diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index d06d237..956b938 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -16,7 +16,7 @@ jobs:
           cache: 'pip' # caching pip dependencies
       - name: Install dependencies
         run: |
-          sudo apt install -y libgirepository1.0-dev
+          sudo apt install -y libgirepository1.0-dev gstreamer1.0-plugins-bad
           python -m pip install --upgrade pip
           pip install .[dev]
       - name: Unit tests
diff --git a/setup.cfg b/setup.cfg
index 66bd50b..3014d7d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -19,7 +19,7 @@ install_requires =
     numpy
     pyee==11.0.1
     websockets==11.0.3
-    PyGObject
+    PyGObject==3.42.2
 
 [options.packages.find]
 where=src