diff --git a/pkgs/development/python-modules/bellows/default.nix b/pkgs/development/python-modules/bellows/default.nix
index 4b5cabbbde4..b0c899cdd3b 100644
--- a/pkgs/development/python-modules/bellows/default.nix
+++ b/pkgs/development/python-modules/bellows/default.nix
@@ -5,14 +5,14 @@
 
 let
   pname = "bellows";
-  version = "0.18.1";
+  version = "0.20.3";
 
 in buildPythonPackage rec {
   inherit pname version;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "6a2e323c2be6f10a8e99fffccb5670bc77bbddb7b5bd9253b69021120f2ab9d7";
+    sha256 = "9342b6b9423c818f99f7c6d9086fbb5e27d5c2efbb1f2a08f6f5a917c4991f86";
   };
 
   propagatedBuildInputs = [