diff --git a/requirements.txt b/requirements.txt
index d843672..4b209ae 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,3 +34,4 @@ Werkzeug==3.1.3
 win32_setctime==1.2.0
 xmltodict==0.14.2
 yarl==1.18.3
+pyplayready==0.6.0