diff --git a/pkgs/development/python-modules/matrix-common/default.nix b/pkgs/development/python-modules/matrix-common/default.nix
index b1dd247987cf..324b3a2df06c 100644
--- a/pkgs/development/python-modules/matrix-common/default.nix
+++ b/pkgs/development/python-modules/matrix-common/default.nix
@@ -7,12 +7,12 @@
 
 buildPythonPackage rec {
   pname = "matrix_common";
-  version = "1.1.0";
+  version = "1.2.1";
   format = "pyproject";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-qCOHSK/Cs3B5gYNn/tUVbzVXcbB8j/ChdZNPR+D/MnY=";
+    sha256 = "sha256-qZ3PAqa9lbJKWmGzVIiKKskr8rS4OccnuN2dos36OFM=";
   };
 
   propagatedBuildInputs = [ attrs ];