X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=README;h=811c594cae9bd4748b1fbc0cd3b94e6be7bec805;hb=9589c94b03e65c8eb66c6b8b27f7455c558e604d;hp=e8b7241b1f60a397a1d9f278a25571c9d1ad4c74;hpb=565c731a4353d1453b65dc9a4267e1f8e4740c06;p=collectd.git

diff --git a/README b/README
index e8b7241b..811c594c 100644
--- a/README
+++ b/README
@@ -573,8 +573,10 @@ Prerequisites
     <http://tangent.org/552/libmemcached.html>
 
   * libmodbus (optional)
-    Used by the `modbus' plugin to communicate with Modbus/TCP devices.
-    <https://launchpad.net/libmodbus>
+    Used by the “modbus” plugin to communicate with Modbus/TCP devices. The
+    “modbus” plugin works with version 2.0.3 of the library – due to frequent
+    API changes other versions may or may not compile cleanly.
+    <http://www.libmodbus.org/>
 
   * libmysqlclient (optional)
     Unsurprisingly used by the `mysql' plugin.