diff --git a/pkgs/development/python-modules/paypalhttp/default.nix b/pkgs/development/python-modules/paypalhttp/default.nix
index 3563bb7454ee..4665571bc18a 100644
--- a/pkgs/development/python-modules/paypalhttp/default.nix
+++ b/pkgs/development/python-modules/paypalhttp/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  fetchpatch2,
 
   # propagates
   pyopenssl,
@@ -25,6 +26,14 @@ buildPythonPackage rec {
     hash = "sha256-3ihcpYtpcejPkiyf4g4jveyNU6flQB2sv9EZ5Pd7tUc=";
   };
 
+  patches = [
+    (fetchpatch2 {
+      # fix content-type header case sensitiyivy
+      url = "https://github.com/paypal/paypalhttp_python/commit/72609783230663b8e34c6f0384837db7b166c8f4.patch";
+      hash = "sha256-K2hO3XRrJ+Gm+rLtWRPy0E2syLS4RhNNHIA3w4xVYtY=";
+    })
+  ];
+
   postPatch = ''
     substituteInPlace tests/http_response_test.py \
       --replace-fail assertEquals assertEqual