diff --git a/Gemfile.lock b/Gemfile.lock
index f0cf9f6..f83399c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -85,7 +85,7 @@ GEM
     childprocess (3.0.0)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
-      railties (>= 5.2.4.1)
+      railties (>= 4.0.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -150,7 +150,7 @@ GEM
     psych (3.1.0)
     public_suffix (4.0.3)
     puma (3.12.4)
-    rack (2.2.2)
+    rack (2.2.6.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.1)