diff --git a/requirements.txt b/requirements.txt
index c0f1e93dbdc3ce358f7c5161772ff7dfbcb47da7..63ceb418b340f0fb6482ec168a05f029b4c5fa6f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,7 @@ coverage==4.5.4
 curtsies==0.3.0
 dnspython==1.16.0
 enum-compat==0.0.3
+etherpad-lite==0.5
 eventlet==0.25.1
 feedgen==0.8.0
 Flask==1.1.1