diff --git a/README.md b/README.md
index c07fad0..8935df3 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,11 @@
 # uboot
 
-AcoSail uboot
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+AcoSail uboot
+
+## changelog
+
+### 2022-11-3 
+~~~
+add rt-kernel
+add nfs install instruction
+~~~
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