diff --git a/pkgs/development/python-modules/pytomorrowio/default.nix b/pkgs/development/python-modules/pytomorrowio/default.nix
index abc90f2a6c7f..8a6e374df0f6 100644
--- a/pkgs/development/python-modules/pytomorrowio/default.nix
+++ b/pkgs/development/python-modules/pytomorrowio/default.nix
@@ -10,13 +10,13 @@
 
 buildPythonPackage rec {
   pname = "pytomorrowio";
-  version = "0.3.3";
+  version = "0.3.4";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0d4f81dc90aefa26da18b927473cb7b08b093f7732301983ef5f0b1ca1181c62";
+    sha256 = "sha256-d4twa9bHaQ9XTHSb8pwJnnJ7tDH6vGpck3/8Y39tRaY=";
   };
 
   propagatedBuildInputs = [