diff --git a/pkgs/applications/networking/flexget/default.nix b/pkgs/applications/networking/flexget/default.nix
index 4edf146b3332..2612aef79d1d 100644
--- a/pkgs/applications/networking/flexget/default.nix
+++ b/pkgs/applications/networking/flexget/default.nix
@@ -34,6 +34,7 @@ python3Packages.buildPythonApplication rec {
     beautifulsoup4
     click
     colorama
+    commonmark
     feedparser
     guessit
     html5lib