diff --git a/requirements.txt b/requirements.txt
index 19b80ff0f..0d57e50e1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@
 # Required packages.
 # -------------------------------------------------------------------
 # install:required
-
+setuptools<66.0.0'
 
 # -------------------------------------------------------------------
 # optional packages.