diff --git a/pkgs/development/python-modules/dataclasses/default.nix b/pkgs/development/python-modules/dataclasses/default.nix
index 083ea6d6347b..44d4d3b57694 100644
--- a/pkgs/development/python-modules/dataclasses/default.nix
+++ b/pkgs/development/python-modules/dataclasses/default.nix
@@ -2,14 +2,14 @@
 
 buildPythonPackage rec {
   pname = "dataclasses";
-  version = "0.5";
+  version = "0.6";
 
   # backport only works on Python 3.6, and is in the standard library in Python 3.7
   disabled = !isPy36;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "07lgn1k56sqpw7yfzv5a6mwshsgaipjawflgyr6lrkryjl64481z";
+    sha256 = "6988bd2b895eef432d562370bb707d540f32f7360ab13da45340101bc2307d84";
   };
 
   meta = with stdenv.lib; {