diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 8d32a3a..5a0ae62 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -7,6 +7,8 @@ version: 2
 
 build:
   os: ubuntu-22.04
+  apt_packages:
+    - ffmpeg
   tools:
     python: "3.10"
     nodejs: "22"