diff --git a/pkgs/development/python-modules/pydantic/default.nix b/pkgs/development/python-modules/pydantic/default.nix
index 371bfba2f0f..9bf4bede1fa 100644
--- a/pkgs/development/python-modules/pydantic/default.nix
+++ b/pkgs/development/python-modules/pydantic/default.nix
@@ -1,7 +1,6 @@
 { lib
 , buildPythonPackage
 , fetchFromGitHub
-, fetchpatch
 , ujson
 , email_validator
 , typing-extensions
@@ -9,28 +8,21 @@
 , isPy3k
 , pytest
 , pytestcov
+, pytest-mock
 }:
 
 buildPythonPackage rec {
   pname = "pydantic";
-  version = "1.5.1";
+  version = "1.7.3";
   disabled = !isPy3k;
 
   src = fetchFromGitHub {
     owner = "samuelcolvin";
     repo = pname;
     rev = "v${version}";
-    sha256 = "0fwrx7p6d5vskg9ibganahiz9y9299idvdmzhjw62jy84gn1vrb4";
+    sha256 = "xihEDmly0vprmA+VdeCoGXg9PjWRPmBWAwk/9f2DLts=";
   };
 
-  # fix tests, remove on next version bump
-  patches = [
-    (fetchpatch {
-      url = "https://github.com/samuelcolvin/pydantic/commit/a5b0e741e585040a0ab8b0be94dd9dc2dd3afcc7.patch";
-      sha256 = "0v91ac3dw23rm73370s2ns84vi0xqbfzpvj84zb7xdiicx8fhmf1";
-    })
-  ];
-
   propagatedBuildInputs = [
     ujson
     email_validator
@@ -40,6 +32,7 @@ buildPythonPackage rec {
   checkInputs = [
     pytest
     pytestcov
+    pytest-mock
   ];
 
   checkPhase = ''