diff --git a/Gemfile.lock b/Gemfile.lock
index de98327d..6e708b53 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -157,7 +157,7 @@ GEM
     caxlsx_rails (0.6.3)
       actionpack (>= 3.1)
       caxlsx (>= 3.0)
-    chartkick (4.1.3)
+    chartkick (4.2.0)
     childprocess (4.1.0)
     chronic (0.10.2)
     chunky_png (1.4.0)