diff --git a/HTTP-API.md b/HTTP-API.md
index 64c87cb..de37bd9 100644
--- a/HTTP-API.md
+++ b/HTTP-API.md
@@ -2,7 +2,7 @@
 
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-*Please note: The following information only applies to v1.1.1, for newer versions, check out [the doc folder](https://github.com/ether/etherpad-lite/tree/master/doc) or the [online docs](http://etherpad.org/doc/v1.3.0).*
+*Please note: The following information only applies to v1.1.1, for newer versions, check out [the doc folder](https://github.com/ether/etherpad-lite/tree/master/doc) or the [online docs](http://etherpad.org/doc/v1.5.1).*
 
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