diff --git a/.rubocop.yml b/.rubocop.yml
index 464b1928..29898e21 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,5 @@
 AllCops:
-  TargetRubyVersion: 2.3
+  TargetRubyVersion: 2.4
   Exclude:
     - '*.gemspec'
     - 'Gemfile*'
@@ -24,4 +24,4 @@ Performance/Casecmp:
   Enabled: false
 
 Naming:
-  Enabled: false
\ No newline at end of file
+  Enabled: false