diff --git a/pkgs/development/python-modules/fnv-hash-fast/default.nix b/pkgs/development/python-modules/fnv-hash-fast/default.nix
index b6fdb148edb31e..2be3f227baf793 100644
--- a/pkgs/development/python-modules/fnv-hash-fast/default.nix
+++ b/pkgs/development/python-modules/fnv-hash-fast/default.nix
@@ -11,14 +11,14 @@
 
 buildPythonPackage rec {
   pname = "fnv-hash-fast";
-  version = "0.3.1";
+  version = "0.4.0";
   format = "pyproject";
 
   src = fetchFromGitHub {
     owner = "bdraco";
     repo = "fnv-hash-fast";
     rev = "v${version}";
-    hash = "sha256-yApMUTO6Kq2YESGMpkU4/FlN57+hX0uQr2fGH7QIdUE=";
+    hash = "sha256-4JhzrRnpb9+FYXd0S2XcBelaHuRksm8RC29rxZqtlpw=";
   };
 
   postPatch = ''