diff --git a/Gemfile.lock b/Gemfile.lock
index 6aad334..2001819 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
       railties (>= 3.1)
     builder (3.2.3)
     byebug (9.0.6)
-    chartkick (2.0.2)
+    chartkick (3.4.0)
     concurrent-ruby (1.0.5)
     connection_pool (2.2.1)
     dotenv (2.2.1)