diff --git a/Gemfile.lock b/Gemfile.lock
index dded63b8..f64fc210 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,11 +1,11 @@
 GIT
-  remote: git://github.com/chrisk/fakeweb.git
+  remote: https://github.com/chrisk/fakeweb.git
   revision: 2b08c1ff2714ec13a12f3497d67fcefce95c2cbe
   specs:
     fakeweb (1.3.0)
 
 GIT
-  remote: git://github.com/plataformatec/show_for.git
+  remote: https://github.com/plataformatec/show_for.git
   revision: 7f2dc583ee84e9fd86d00c70c5e63027b20a8efc
   specs:
     show_for (0.3.0.rc)
@@ -100,7 +100,7 @@ GEM
       activemodel (>= 4.0.0)
       activesupport (>= 4.0.0)
       mime-types (>= 1.16)
-    chartkick (3.0.2)
+    chartkick (5.0.4)
     childprocess (0.9.0)
       ffi (~> 1.0, >= 1.0.11)
     chronic (0.10.2)