diff --git a/Gemfile.lock b/Gemfile.lock
index 08c1f93b3..4bec97047 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -114,7 +114,7 @@ GEM
       mime-types (>= 1.16)
     celluloid (0.16.0)
       timers (~> 4.0.0)
-    chartkick (3.4.2)
+    chartkick (4.0.5)
     childprocess (0.9.0)
       ffi (~> 1.0, >= 1.0.11)
     client_side_validations (4.2.12)