diff --git a/.travis.yml b/.travis.yml
index a2b43ab..02bd14d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,9 @@
+os: linux
 language: generic
 env:
   global:
     - IDE_VERSION=1.8.8
-  matrix:
+  jobs:
     - BOARD="esp8266:esp8266:generic:xtal=80,eesz=4M3M,ip=lm2f,exception=disabled,FlashMode=qio,FlashFreq=80" ARDJSON="5.13.5"
     - BOARD="esp32:esp32:esp32:FlashFreq=80,FlashSize=4M" ARDJSON="5.13.5"
     - BOARD="esp8266:esp8266:generic:xtal=80,eesz=4M3M,ip=lm2f,exception=disabled,FlashMode=qio,FlashFreq=80" ARDJSON="6.14.0"