diff --git a/pkgs/development/python-modules/mitmproxy/default.nix b/pkgs/development/python-modules/mitmproxy/default.nix
index 3df81ce29ce4..b50216ece8ad 100644
--- a/pkgs/development/python-modules/mitmproxy/default.nix
+++ b/pkgs/development/python-modules/mitmproxy/default.nix
@@ -45,7 +45,7 @@
 
 buildPythonPackage rec {
   pname = "mitmproxy";
-  version = "10.4.0";
+  version = "10.4.2";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -54,7 +54,7 @@ buildPythonPackage rec {
     owner = "mitmproxy";
     repo = "mitmproxy";
     rev = "refs/tags/v${version}";
-    hash = "sha256-W+m7PVphj4sP5+Um7dtPbdnaZ+edZn/fcE4XJGX1E6M=";
+    hash = "sha256-1OMVgV6dFKoG/upv+RWbYqftqejeQLBlsycuy2+Na6E=";
   };