diff --git a/requirements.txt b/requirements.txt
index 7e13b3e3..ae4d9cb7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ psutil
 pyjwt
 giturlparse
 aiosmtpd
-marshmallow
+marshmallow<3.24.0
 requests
 GitPython
 nbformat