diff --git a/Gemfile b/Gemfile
index f2405a7..57cbeb4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -103,7 +103,7 @@ gem 'to_xls', '~> 1.5', '>= 1.5.3'
 gem 'audited-activerecord', '~> 4.2'
 
 #for charts
-gem 'chartkick', '~> 1.4', '>= 1.4.1'
+gem 'chartkick', '~> 3.4'
 gem 'groupdate', '~> 2.5', '>= 2.5.2'
 
 # GSM service
diff --git a/Gemfile.lock b/Gemfile.lock
index 9a0b89b..79b33a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
-    chartkick (1.5.2)
+    chartkick (3.4.0)
     chosen-rails (1.4.1)
       coffee-rails (>= 3.2)
       compass-rails (>= 1.1.2)
@@ -432,7 +432,7 @@ DEPENDENCIES
   capistrano-maintenance (~> 1.0)
   capistrano-rails (~> 1.1)
   capybara
-  chartkick (~> 1.4, >= 1.4.1)
+  chartkick (~> 3.4)
   chosen-rails (= 1.4.1)
   client_side_validations (~> 4.2, >= 4.2.1)
   client_side_validations-simple_form (~> 3.2, >= 3.2.1)