diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5f3f3e9..3a2aaae 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,6 +12,7 @@ tests:
     - pip install PyQtWebEngine
 
     - apt-get update
+    - apt-get install -y libnss3
     - apt-get install ffmpeg libsm6 libxext6 libxkbcommon-x11-0 -y
     - apt-get install libxcb-xinerama0 -y