diff --git a/pkgs/development/python-modules/regex/default.nix b/pkgs/development/python-modules/regex/default.nix
index 7a581c682ceb..ab9091e13fc5 100644
--- a/pkgs/development/python-modules/regex/default.nix
+++ b/pkgs/development/python-modules/regex/default.nix
@@ -7,7 +7,7 @@
 }:
 
 let
-  version = "2025.9.18";
+  version = "2025.11.3";
 in
 buildPythonPackage {
   pname = "regex";
@@ -18,13 +18,21 @@ buildPythonPackage {
     owner = "mrabarnett";
     repo = "mrab-regex";
     tag = version;
-    hash = "sha256-s/jaRbQffd1DmGribk8gwTraKEhWfvFZboWXUduhM8A=";
+    hash = "sha256-KEn+8DoAAq2OBqnl7vluqn1UPBpIfmO1v4wxKUZrcyA=";
   };
 
   build-system = [ setuptools ];
 
+  preCheck = ''
+    rm regex/__init__.py
+  '';
+
   checkPhase = ''
-    ${python.interpreter} -m unittest
+    runHook preCheck
+
+    ${python.interpreter} -m unittest ./regex/tests/test_regex.py
+
+    runHook postCheck
   '';
 
   pythonImportsCheck = [ "regex" ];