diff --git a/pkgs/development/python-modules/pysnow/default.nix b/pkgs/development/python-modules/pysnow/default.nix
index f69e18f43137..41c8764639c0 100644
--- a/pkgs/development/python-modules/pysnow/default.nix
+++ b/pkgs/development/python-modules/pysnow/default.nix
@@ -9,6 +9,7 @@
   poetry-core,
   python-magic,
   pytz,
+  six,
   pytestCheckHook,
   requests-oauthlib,
 }:
@@ -25,6 +26,8 @@ buildPythonPackage rec {
     hash = "sha256-nKOPCkS2b3ObmBnk/7FTv4o4vwUX+tOtZI5OQQ4HSTY=";
   };
 
+  pythonRelaxDeps = [ "requests-oauthlib" ];
+
   nativeBuildInputs = [ poetry-core ];
 
   propagatedBuildInputs = [
@@ -32,6 +35,7 @@ buildPythonPackage rec {
     ijson
     python-magic
     pytz
+    six
     requests-oauthlib
   ];