diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -171,6 +171,7 @@ nbconvert==7.7.3
     webencodings==0.5.1
   traitlets==5.9.0
 orjson==3.10.3
+paste==3.10.1
 premailer==3.10.0
   cachetools==5.3.3
   cssselect==1.2.0