diff --git a/pkgs/development/python-modules/croniter/default.nix b/pkgs/development/python-modules/croniter/default.nix
index d9e7a1f58370..1b122f9b5e41 100644
--- a/pkgs/development/python-modules/croniter/default.nix
+++ b/pkgs/development/python-modules/croniter/default.nix
@@ -9,12 +9,12 @@
 
 buildPythonPackage rec {
   pname = "croniter";
-  version = "1.3.1";
+  version = "1.3.4";
   format = "setuptools";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-2/AgcJiKvH6JVVg5FZMbNvhlw4KJOQvhGgxBErVcqsY=";
+    hash = "sha256-MWk2WRaDS+ZUwsrFfqFNcQ50L464pfzoBPbOVI2oC/I=";
   };
 
   propagatedBuildInputs = [