diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a404a02..39cf61a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -36,6 +36,8 @@ test:
     - apt install xvfb
     - Xvfb :119 -screen 0 1024x768x16 &
     - export DISPLAY=:119
+    - pulseaudio -D --system --exit-idle-time=-1
+    - pactl load-module module-null-sink sink_name=DummyOutput sink_properties=device.description="Virtual_Dummy_Output"
   script:
     - pipenv run ./cicd/pytest.sh
   artifacts:
diff --git a/Pipfile.lock b/Pipfile.lock
index e06d54f..cb31dc9 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -431,7 +431,7 @@
                 "sha256:e1ea316102ea1e1770724db01998d1603ed921c54a86a2efcb03428d5417e489",
                 "sha256:f90bfc4ad18450c80b024036eaf91e4a246ae287701aaa88eaebebf150868052"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_full_version < '4.0.0'",
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
             "version": "==5.1"
         },
         "docutils": {
@@ -617,11 +617,11 @@
         },
         "more-itertools": {
             "hashes": [
-                "sha256:558bb897a2232f5e4f8e2399089e35aecb746e1f9191b6584a151647e89267be",
-                "sha256:7818f596b1e87be009031c7653d01acc46ed422e6656b394b0f765ce66ed4982"
+                "sha256:68c70cc7167bdf5c7c9d8f6954a7837089c6a36bf565383919bb595efb8a17e5",
+                "sha256:b78134b2063dd214000685165d81c154522c3ee0a1c0d4d113c80361c234c5a2"
             ],
             "markers": "python_version >= '3.5'",
-            "version": "==8.3.0"
+            "version": "==8.4.0"
         },
         "mypy": {
             "hashes": [
@@ -723,11 +723,11 @@
         },
         "pytest-cov": {
             "hashes": [
-                "sha256:b6a814b8ed6247bd81ff47f038511b57fe1ce7f4cc25b9106f1a4b106f1d9322",
-                "sha256:c87dfd8465d865655a8213859f1b4749b43448b5fae465cb981e16d52a811424"
+                "sha256:1a629dc9f48e53512fcbfda6b07de490c374b0c83c55ff7a1720b3fccff0ac87",
+                "sha256:6e6d18092dce6fad667cd7020deed816f858ad3b49d5b5e2b1cc1c97a4dba65c"
             ],
             "index": "pypi",
-            "version": "==2.9.0"
+            "version": "==2.10.0"
         },
         "pytz": {
             "hashes": [
@@ -801,11 +801,11 @@
         },
         "sphinx": {
             "hashes": [
-                "sha256:1c445320a3310baa5ccb8d957267ef4a0fc930dc1234db5098b3d7af14fbb242",
-                "sha256:7d3d5087e39ab5a031b75588e9859f011de70e213cd0080ccbc28079fb0786d1"
+                "sha256:74fbead182a611ce1444f50218a1c5fc70b6cc547f64948f5182fb30a2a20258",
+                "sha256:97c9e3bcce2f61d9f5edf131299ee9d1219630598d9f9a8791459a4d9e815be5"
             ],
             "index": "pypi",
-            "version": "==3.1.0"
+            "version": "==3.1.1"
         },
         "sphinx-rtd-theme": {
             "hashes": [
diff --git a/tests/player_tests/chromecast_tests.py b/tests/player_tests/chromecast_tests.py
index 522b2de..fbd3e96 100644
--- a/tests/player_tests/chromecast_tests.py
+++ b/tests/player_tests/chromecast_tests.py
@@ -3,7 +3,7 @@ from sublime.players.chromecast import ChromecastPlayer
 
 def test_init():
     empty_fn = lambda *a, **k: None
-    ChromecastPlayer(
+    chromecast_player = ChromecastPlayer(
         empty_fn,
         empty_fn,
         empty_fn,
@@ -13,3 +13,4 @@ def test_init():
             "LAN Server Port Number": 6969,
         },
     )
+    chromecast_player.shutdown()
diff --git a/tests/player_tests/mpv_tests.py b/tests/player_tests/mpv_tests.py
index 3956eca..865b01a 100644
--- a/tests/player_tests/mpv_tests.py
+++ b/tests/player_tests/mpv_tests.py
@@ -66,3 +66,4 @@ def test_play():
 
     # Pause so that it doesn't keep playing while testing
     mpv_player.pause()
+    mpv_player.shutdown()