diff --git a/pkgs/development/python-modules/regex/default.nix b/pkgs/development/python-modules/regex/default.nix
index 0445b02c1f33..92ce64d186db 100644
--- a/pkgs/development/python-modules/regex/default.nix
+++ b/pkgs/development/python-modules/regex/default.nix
@@ -7,11 +7,11 @@
 
 buildPythonPackage rec {
   pname = "regex";
-  version = "2021.4.4";
+  version = "2021.8.28";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-Uro9P5uULEnX5LwQW7KFUcRAZfE5plBiq3kSvvEMmvs=";
+    sha256 = "f585cbbeecb35f35609edccb95efd95a3e35824cd7752b586503f7e6087303f1";
   };
 
   # Sources for different Python releases are located in same folder