Merge branch 'greenkeeper-update-all'
diff --git a/.travis.yml b/.travis.yml
index ab2c53c..5702bef 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@
   - "0.8"
   - "0.10"
   - "0.12"
+  - "4"
   - "5"
   - "6"
 before_install:
diff --git a/test/options.js b/test/options.js
index 6af0e55..b6b1c4b 100644
--- a/test/options.js
+++ b/test/options.js
@@ -75,8 +75,7 @@
 
         assert.deepEqual(undefined, options.loadAndParseConfig('jslintrc'));
 
-        assert.strictEqual('Error reading config file "jslintrc": SyntaxError: Unexpected end of input',
-                           con.warnings[0]);
+        assert(/Error reading config file "jslintrc": SyntaxError: Unexpected end of /.test(con.warnings[0]));
     });
 
     test('no crash when malformed jslintrc', function () {
@@ -84,8 +83,7 @@
 
         assert.deepEqual(undefined, options.loadAndParseConfig('jslintrc'));
 
-        assert.strictEqual('Error reading config file "jslintrc": SyntaxError: Unexpected end of input',
-                           con.warnings[0]);
+        assert(/Error reading config file "jslintrc": SyntaxError: Unexpected end of /.test(con.warnings[0]));
     });
 
     test('nonexistent .jslintrc => undefined', function () {