diff --git a/Gemfile b/Gemfile
index 686cc94..ae2a054 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,7 +19,7 @@ group :development do
   # code style
   gem "pronto",         "0.7.1"
   gem "pronto-rubocop", "0.7.0", require: false
-  gem "rubocop",        "0.46.0"
+  gem "rubocop",        "0.47.0"
 
   # automatic test runs
   gem "guard-rspec",   require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 173b2c6..99232ca 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -228,8 +228,8 @@ GEM
       rspec-mocks (~> 3.5.0)
       rspec-support (~> 3.5.0)
     rspec-support (3.5.0)
-    rubocop (0.46.0)
-      parser (>= 2.3.1.1, < 3.0)
+    rubocop (0.47.0)
+      parser (>= 2.3.3.1, < 3.0)
       powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.7)
@@ -274,7 +274,7 @@ GEM
       ethon (>= 0.9.0)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    unicode-display_width (1.1.2)
+    unicode-display_width (1.1.3)
     uuid (2.3.8)
       macaddr (~> 1.0)
     valid (1.2.0)
@@ -309,7 +309,7 @@ DEPENDENCIES
   rspec-collection_matchers (~> 1.1.2)
   rspec-core (~> 3.5.1)
   rspec-rails (~> 3.5.1)
-  rubocop (= 0.46.0)
+  rubocop (= 0.47.0)
   simplecov (= 0.12.0)
   simplecov-rcov (= 0.2.3)
   spring