diff --git a/pkgs/development/python-modules/google_auth/default.nix b/pkgs/development/python-modules/google_auth/default.nix
index b0b6bfaa5ef9..315d4756e0db 100644
--- a/pkgs/development/python-modules/google_auth/default.nix
+++ b/pkgs/development/python-modules/google_auth/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ stdenv, buildPythonPackage, fetchpatch, fetchPypi
 , pytest, mock, oauth2client, flask, requests, urllib3, pytest-localserver, six, pyasn1-modules, cachetools, rsa }:
 
 buildPythonPackage rec {
@@ -9,6 +9,13 @@ buildPythonPackage rec {
     inherit pname version;
     sha256 = "0f7c6a64927d34c1a474da92cfc59e552a5d3b940d3266606c6a28b72888b9e4";
   };
+  patches = [
+    (fetchpatch {
+      name = "use-new-pytest-api-to-keep-building-with-pytest5.patch";
+      url = "https://github.com/googleapis/google-auth-library-python/commit/b482417a04dbbc207fcd6baa7a67e16b1a9ffc77.patch";
+      sha256 = "07jpa7pa6sffbcwlsg5fgcv2vvngil5qpmv6fhjqp7fnvx0674s0";
+    })
+  ];
 
   checkInputs = [ pytest mock oauth2client flask requests urllib3 pytest-localserver ];
   propagatedBuildInputs = [ six pyasn1-modules cachetools rsa ];