diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7f1f0d150..bc3036853 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -20,6 +20,7 @@ build-appimage:
   image: rabits/qt:5.11-desktop
   stage: build
   before_script:
+    - sudo apt-get update
     - sudo apt-get install -y wget libpulse-dev
     - git submodule update --init --recursive
     - wget https://github.com/probonopd/linuxdeployqt/releases/download/continuous/linuxdeployqt-continuous-x86_64.AppImage