diff --git a/readme.md b/readme.md
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+++ b/readme.md
@@ -8,3 +8,16 @@
 
 # eday
 e-day stands for e-commerse day, build for e-commerse web
+
+# version
+this is version 2.0.0
+
+you might wanna use the stable one in
+[https://github.com/9r3i/eday/tree/1.2.1-stable](https://github.com/9r3i/eday/tree/1.2.1-stable)
+
+# requirements
+this version has been using namespace \eday, so it's very different from the old one
+
+this version also requires another library, but fortunately, I put everithing on it.
+
+still, i suggest use thr old one because that version is stable.