diff --git a/Gemfile.lock b/Gemfile.lock
index 18a0fed..0c3196c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -82,7 +82,7 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (~> 1.5)
       xpath (~> 3.2)
-    chartkick (3.3.0)
+    chartkick (3.4.0)
     chronic (0.10.2)
     churn (0.0.35)
       chronic (>= 0.2.3)