diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 68d0f790..7eb1dee6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,6 +8,9 @@ stages:
 
 test:
   stage: test
+  before_script:
+    - apt-get update
+    - apt-get install -y ffmpeg
   script:
     - deno fmt --check
     - deno task lint