diff --git a/pkgs/development/python-modules/celery/default.nix b/pkgs/development/python-modules/celery/default.nix
index 404ead243a9..41c9493922a 100644
--- a/pkgs/development/python-modules/celery/default.nix
+++ b/pkgs/development/python-modules/celery/default.nix
@@ -13,6 +13,7 @@ buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace requirements/test.txt \
+      --replace "moto==1.3.7" moto \
       --replace "pytest>=4.3.1,<4.4.0" pytest
   '';