diff --git a/README.md b/README.md
index e412186..c10b500 100644
--- a/README.md
+++ b/README.md
@@ -70,7 +70,7 @@ And you can also rename an asmdef by one action.
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 ## Environment
-Unity 2021.1.16f1
+Unity 2021.2.8f1
 
 This library use unity internal class, so may be not work (or couse build error) depending your unity vresion.