diff --git a/README.md b/README.md
index ae0c5ba..512f96c 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ A simple, one-room, scalable real-time web chat, with file sharing - built in Op
 
 1) Requirements
 ---------------
-[Opa](https://opalang.org/get.xmlt) build > 1046
+[Opa](https://opalang.org/get.xmlt) build > 1393
 
 2) Build
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