diff --git a/Gemfile.lock b/Gemfile.lock
index dded63b8..850c6501 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -100,7 +100,7 @@ GEM
       activemodel (>= 4.0.0)
       activesupport (>= 4.0.0)
       mime-types (>= 1.16)
-    chartkick (3.0.2)
+    chartkick (3.4.2)
     childprocess (0.9.0)
       ffi (~> 1.0, >= 1.0.11)
     chronic (0.10.2)