diff --git a/pkgs/development/python-modules/python-openstackclient/default.nix b/pkgs/development/python-modules/python-openstackclient/default.nix
index 037bfa4859fe..7e754f154968 100644
--- a/pkgs/development/python-modules/python-openstackclient/default.nix
+++ b/pkgs/development/python-modules/python-openstackclient/default.nix
@@ -59,7 +59,9 @@ buildPythonPackage rec {
     python-cinderclient
     python-keystoneclient
     requests
-  ];
+  ]
+  # to support proxy envs like ALL_PROXY in requests
+  ++ requests.optional-dependencies.socks;
 
   nativeCheckInputs = [
     ddt