diff --git a/Gemfile.lock b/Gemfile.lock
index fbb9e20..031acab 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,8 +42,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     annotate (2.7.4)
       activerecord (>= 3.2, < 6.0)
       rake (>= 10.4, < 13.0)
@@ -134,7 +134,7 @@ GEM
       method_source (~> 0.9.0)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    public_suffix (3.0.3)
+    public_suffix (4.0.6)
     puma (3.12.0)
     rack (2.0.6)
     rack-test (1.1.0)
@@ -205,7 +205,6 @@ GEM
       tzinfo (>= 1.0.0)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)
-    wdm (0.1.1)
     web-console (3.7.0)
       actionview (>= 5.0)
       activemodel (>= 5.0)
@@ -244,7 +243,6 @@ DEPENDENCIES
   spring-watcher-listen (~> 2.0.0)
   tzinfo-data
   uglifier (>= 1.3.0)
-  wdm (>= 0.1.0)
   web-console (>= 3.3.0)
 
 RUBY VERSION