diff --git a/.travis.yml b/.travis.yml
index 06a4275..cf31c8e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: python
 python:
-  - "3.3"
+  - "3.6"
 # command to install dependencies
 install:
   - pip install flake8
diff --git a/messages.json b/messages.json
index c74bfe6..296e383 100644
--- a/messages.json
+++ b/messages.json
@@ -5,5 +5,6 @@
     "1.1.1": "messages/1.1.1.txt",
     "1.1.2": "messages/1.1.2.txt",
     "1.1.3": "messages/1.1.3.txt",
-    "1.1.4": "messages/1.1.4.txt"
+    "1.1.4": "messages/1.1.4.txt",
+    "2.0.0": "messages/2.0.0.txt"
 }
diff --git a/messages/2.0.0.txt b/messages/2.0.0.txt
new file mode 100644
index 0000000..57113d7
--- /dev/null
+++ b/messages/2.0.0.txt
@@ -0,0 +1,5 @@
+SublimeLinter-contrib-htmlhint 2.0.0
+------------------------------------
+Upgrade to handle SublimeLinter 4.0!
+
+Please refer to https://github.com/mmaday/SublimeLinter-contrib-htmlhint for complete installation instructions.