diff --git a/Gemfile.lock b/Gemfile.lock
index 0ced0dd..d415a13 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,7 +49,7 @@ GEM
       sassc (>= 2.0.0)
     builder (3.2.4)
     byebug (10.0.2)
-    chartkick (3.3.0)
+    chartkick (3.4.0)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)