diff --git a/Gemfile.lock b/Gemfile.lock
index f0cf9f6..e15aa73 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,8 +53,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (9.0.0)
     ast (2.4.0)
     axlsx_rails (0.6.1)
@@ -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
@@ -148,7 +148,7 @@ GEM
     postgresql (1.0.0)
       pg
     psych (3.1.0)
-    public_suffix (4.0.3)
+    public_suffix (5.0.0)
     puma (3.12.4)
     rack (2.2.2)
     rack-test (1.1.0)