1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/python-modules/python-telegram-bot/default.nix b/pkgs/development/python-modules/python-telegram-bot/default.nix
index 677322fc50d12..47d716d1c8685 100644
--- a/pkgs/development/python-modules/python-telegram-bot/default.nix
+++ b/pkgs/development/python-modules/python-telegram-bot/default.nix
@@ -43,7 +43,7 @@ buildPythonPackage rec {
       --replace "tornado==6.1" "tornado"
   '';
 
-  setupPyGlobalFlags = "--with-upstream-urllib3";
+  setupPyGlobalFlags = [ "--with-upstream-urllib3" ];
 
   # tests not included with release
   doCheck = false;