diff --git a/docs/requirements.txt b/docs/requirements.txt
index bf1486c5e..04a965430 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -49,4 +49,5 @@ websockets
 keyboard
 uvicorn
 pattern_singleton
-braceexpand
\ No newline at end of file
+braceexpand
+transformers==3.4.0
\ No newline at end of file