diff --git a/pkgs/development/python-modules/flatten-dict/default.nix b/pkgs/development/python-modules/flatten-dict/default.nix
index c9dd82e15e0a..c9a55c0b5e58 100644
--- a/pkgs/development/python-modules/flatten-dict/default.nix
+++ b/pkgs/development/python-modules/flatten-dict/default.nix
@@ -9,14 +9,14 @@
 
 buildPythonPackage rec {
   pname = "flatten-dict";
-  version = "0.4.2";
+  version = "0.5.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "ianlini";
     repo = "flatten-dict";
     rev = version;
-    hash = "sha256-uHenKoD4eLm9sMREVuV0BB/oUgh4NMiuj+IWd0hlxNQ=";
+    hash = "sha256-wzCuTnLOOeybhBPcyyPNPKWoJBHwaKkmARTzlg87wtU=";
   };
 
   nativeBuildInputs = [ poetry-core ];