diff --git a/.travis.yml b/.travis.yml
index f52002e..a9de247 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,7 +12,7 @@ install:
 # boards manager not working on 1.6.7 - 1.6.8
   - arduino --pref "boardsmanager.additional.urls=http://arduino.esp8266.com/stable/package_esp8266com_index.json" --save-prefs
 # install lib arduino json not working in 1.6.5
-#  - arduino --install-library "ArduinoJson"
+  - arduino --install-library "ArduinoJson"
 #  - git clone https://github.com/bblanchon/ArduinoJson /usr/local/share/arduino/libraries/ArduinoJson
   - arduino --install-boards esp8266:esp8266
   - arduino --board esp8266:esp8266:generic:CpuFrequency=80,CrystalFreq=26,FlashFreq=40,FlashMode=qio,FlashSize=4M1M,led=2,LwIPVariant=v2mss536,Debug=Serial,DebugLevel=CORE --save-prefs