diff --git a/Gemfile.lock b/Gemfile.lock
index cb3296e..abacc99 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (7.1.4)
     bindex (0.5.0)
     builder (3.2.3)
@@ -71,7 +71,7 @@ GEM
     ffi (1.9.25)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
-    hashdiff (0.4.0)
+    hashdiff (1.0.1)
     httparty (0.17.0)
       mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
@@ -108,7 +108,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.1.0)
+    public_suffix (4.0.3)
     puma (4.0.1)
       nio4r (~> 2.0)
     rack (2.0.7)
@@ -218,7 +218,7 @@ GEM
       activemodel (>= 5.0)
       bindex (>= 0.4.0)
       railties (>= 5.0)
-    webmock (3.6.0)
+    webmock (3.8.3)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)