diff --git a/pkgs/development/python-modules/fiona/default.nix b/pkgs/development/python-modules/fiona/default.nix
index 5ab6dc145f9..edbd9433fb0 100644
--- a/pkgs/development/python-modules/fiona/default.nix
+++ b/pkgs/development/python-modules/fiona/default.nix
@@ -19,7 +19,7 @@
 
 buildPythonPackage rec {
   pname = "fiona";
-  version = "1.9.4";
+  version = "1.9.4.post1";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
@@ -28,7 +28,7 @@ buildPythonPackage rec {
     owner = "Toblerity";
     repo = "Fiona";
     rev = "refs/tags/${version}";
-    hash = "sha256-v4kTjoGu4AiEepBrGyY1e1OFC1eCk/U6f8XA/vtfY0E=";
+    hash = "sha256-CeGdWAmWteVtL0BoBQ1sB/+1AWkmxogtK99bL5Fpdbw=";
   };
 
   nativeBuildInputs = [