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diff --git a/README.md b/README.md
index 1c80534..6741957 100644
--- a/README.md
+++ b/README.md
@@ -418,6 +418,7 @@ Important: this library is still in alpha, therefore the API might be subject to
 - Chrome 4+
 - Safari 3.2+
 - Opera 9+
+- IE9 +
 
 ### Mobile
 - iOS Safari 3.2+