diff --git a/.travis.yml b/.travis.yml
index a857ddb..7f8af3a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,7 +21,7 @@
 
 language: python
 python:
-  - "2.7"
+  - "3.7"
 
 # Cache PlatformIO packages using Travis CI container-based infrastructure
 sudo: false
diff --git a/library.json b/library.json
index b5878e3..c0691a3 100644
--- a/library.json
+++ b/library.json
@@ -13,7 +13,7 @@
     "type": "git",
     "url": "https://github.com/xreef/PCF8574_library.git"
   },
-  "version": "2.2.1",
+  "version": "2.2.2",
   "frameworks": "arduino",
   "platforms": "*"
 }