diff --git a/pkgs/development/python-modules/matplotlib/default.nix b/pkgs/development/python-modules/matplotlib/default.nix
index 66436a2d2669..9282fe02f30f 100644
--- a/pkgs/development/python-modules/matplotlib/default.nix
+++ b/pkgs/development/python-modules/matplotlib/default.nix
@@ -89,7 +89,7 @@ let
 in
 
 buildPythonPackage rec {
-  version = "3.9.0";
+  version = "3.9.1";
   pname = "matplotlib";
   pyproject = true;
 
@@ -97,7 +97,7 @@ buildPythonPackage rec {
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-5tKepsGeNLMPt9iLcIH4aaAwFPZv4G1izHfVpuqI7Xo=";
+    hash = "sha256-3gaxm425XdM9DcF8kmx8nr7Z9XIHS2+sT2UGimgU0BA=";
   };
 
   patches = lib.optionals stdenv.isDarwin [