diff --git a/.travis.yml b/.travis.yml
index 151df229..9187cd41 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,10 @@
 sudo: false
 
+before_install:
+  - gem update simplecov
+
 rvm:
+  - 2.4.0
   - 2.3.0
   - 2.2
   - 2.1
diff --git a/spec/coverage.rb b/spec/coverage.rb
index 9179c632..d81998df 100644
--- a/spec/coverage.rb
+++ b/spec/coverage.rb
@@ -7,5 +7,5 @@
   formatters << Coveralls::SimpleCov::Formatter
 end
 
-SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter[*formatters]
+SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new(formatters)
 SimpleCov.start