1 files changed, 1 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index 50d02a55..2571cfd8 100644
--- a/setup.py
+++ b/setup.py
@@ -81,6 +81,7 @@ setup(
         "tornado>=4.3,<5.2",
         "urwid>=2.0.1,<2.1",
         "wsproto>=0.13.0,<0.14.0",
+        "zstandard>=0.11.0,<0.13.0",
     ],
     extras_require={
         ':sys_platform == "win32"': [