diff --git a/pkgs/development/python-modules/cachetools/default.nix b/pkgs/development/python-modules/cachetools/default.nix
index 120fd5df124..a160c5ea94c 100644
--- a/pkgs/development/python-modules/cachetools/default.nix
+++ b/pkgs/development/python-modules/cachetools/default.nix
@@ -1,5 +1,6 @@
 { lib
 , buildPythonPackage
+, isPy27
 , fetchFromGitHub
 , pytestCheckHook
 }:
@@ -8,6 +9,8 @@ buildPythonPackage rec {
   pname = "cachetools";
   version = "4.2.1";
 
+  disabled = isPy27;
+
   src = fetchFromGitHub {
     owner = "tkem";
     repo = pname;
diff --git a/pkgs/development/python-modules/google-auth/default.nix b/pkgs/development/python-modules/google-auth/default.nix
index d583de9c074..cf456317f8c 100644
--- a/pkgs/development/python-modules/google-auth/default.nix
+++ b/pkgs/development/python-modules/google-auth/default.nix
@@ -13,6 +13,7 @@
 , responses
 , rsa
 , six
+, pyopenssl
 }:
 
 buildPythonPackage rec {
@@ -24,7 +25,13 @@ buildPythonPackage rec {
     sha256 = "0bmdqkyv8k8n6s8dss4zpbcq1cdxwicpb42kwybd02ia85mh43hb";
   };
 
-  propagatedBuildInputs = [ pyasn1-modules cachetools rsa six ];
+  propagatedBuildInputs = [
+    cachetools
+    pyasn1-modules
+    rsa
+    six
+    pyopenssl
+  ];
 
   checkInputs = [
     flask