diff --git a/pkgs/development/python-modules/circuitbreaker/default.nix b/pkgs/development/python-modules/circuitbreaker/default.nix
index 05fce26d6e65..9218d82847cc 100644
--- a/pkgs/development/python-modules/circuitbreaker/default.nix
+++ b/pkgs/development/python-modules/circuitbreaker/default.nix
@@ -1,14 +1,15 @@
 { lib
 , buildPythonPackage
 , fetchFromGitHub
-, mock
 , pytestCheckHook
+, pytest-asyncio
+, pytest-mock
 , pythonOlder
 }:
 
 buildPythonPackage rec {
   pname = "circuitbreaker";
-  version = "1.4.0";
+  version = "2.0.0";
   format = "setuptools";
 
   disabled = pythonOlder "3.8";
@@ -17,12 +18,13 @@ buildPythonPackage rec {
     owner = "fabfuel";
     repo = pname;
     rev = "refs/tags/${version}";
-    hash = "sha256-l0ASt9CQmgJmWpRrghElbff/gaNOmxNh+Wj0C0p4jE0=";
+    hash = "sha256-jaDCMGCZZu3STluYeHDNgdEPf2DNq7bXJ0LPV3JZdk0=";
   };
 
   nativeCheckInputs = [
-    mock
     pytestCheckHook
+    pytest-asyncio
+    pytest-mock
   ];
 
   pythonImportsCheck = [