diff --git a/pkgs/development/python-modules/cachetools/default.nix b/pkgs/development/python-modules/cachetools/default.nix
index 56efa9a34852..120fd5df124b 100644
--- a/pkgs/development/python-modules/cachetools/default.nix
+++ b/pkgs/development/python-modules/cachetools/default.nix
@@ -1,17 +1,28 @@
-{ lib, buildPythonPackage, fetchPypi, isPy27 }:
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytestCheckHook
+}:
 
 buildPythonPackage rec {
   pname = "cachetools";
-  version = "4.1.1";
+  version = "4.2.1";
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "bbaa39c3dede00175df2dc2b03d0cf18dd2d32a7de7beb68072d13043c9edb20";
+  src = fetchFromGitHub {
+    owner = "tkem";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "1b662ph8m2d05d2vi3izgnr6v7h9zfvscfsaaw8nhdmmm15ivfa6";
   };
 
+  checkInputs = [ pytestCheckHook ];
+
+  pythonImportsCheck = [ "cachetools" ];
+
   meta = with lib; {
     description = "Extensible memoizing collections and decorators";
     homepage = "https://github.com/tkem/cachetools";
-    license = licenses.mit;
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ fab ];
   };
 }
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index f6020cdaa840..716981fbc9ed 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1119,16 +1119,7 @@ in {
 
   cachelib = callPackage ../development/python-modules/cachelib { };
 
-  cachetools = let
-    cachetools' = callPackage ../development/python-modules/cachetools { };
-    cachetools_2 = cachetools'.overridePythonAttrs (oldAttrs: rec {
-      version = "3.1.1";
-      src = oldAttrs.src.override {
-        inherit version;
-        sha256 = "16m69l6n6y1r1y7cklm92rr7v69ldig2n3lbl3j323w5jz7d78lf";
-      };
-    });
-  in if isPy3k then cachetools' else cachetools_2;
+  cachetools = callPackage ../development/python-modules/cachetools { };
 
   cachy = callPackage ../development/python-modules/cachy { };