diff --git a/.travis.yml b/.travis.yml
index b59f1fa15..a4cef5371 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,10 @@
 language: erlang
 
 otp_release:
-   - 17.0
+   - 18.0
+   - 18.1
+   - 18.2.1
+   - 18.3
 
 script: 
   - make
diff --git a/README.md b/README.md
index 9cd94b132..04876c7f9 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ emqttd is a massively scalable and clusterable MQTT V3.1/V3.1.1 broker written i
 
 emqttd is fully open source and licensed under the Apache Version 2.0. emqttd implements both MQTT V3.1 and V3.1.1 protocol specifications, and supports WebSocket, STOMP, SockJS, CoAP and MQTT-SN at the same time.
 
-emqttd requires Erlang R17+ to build.
+emqttd requires Erlang R18+ to build since 1.1 release.
 
 Demo Server: tcp://t.emqtt.io:1883