diff --git a/pkgs/development/python-modules/Cython/default.nix b/pkgs/development/python-modules/Cython/default.nix
index a6e836b9ba29..f4e8c927ad88 100644
--- a/pkgs/development/python-modules/Cython/default.nix
+++ b/pkgs/development/python-modules/Cython/default.nix
@@ -24,12 +24,12 @@ let
 
 in buildPythonPackage rec {
   pname = "cython";
-  version = "0.29.33";
+  version = "0.29.34";
 
   src = fetchPypi {
     pname = "Cython";
     inherit version;
-    hash = "sha256-UEB2TEpNLOlko5XaJPDRrlgUSZXauSxrlvRMP01yKGo=";
+    hash = "sha256-GQloj117Uhpgw5bSC7qeR6Gy0nhL+whUAeHh59KaKag=";
   };
 
   nativeBuildInputs = [