diff --git a/Gemfile.lock b/Gemfile.lock
index d947311549..c3b9af6204 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -454,7 +454,7 @@ GEM
       rspec (>= 2.99.0, < 4.0)
     haml (4.0.7)
       tilt
-    hashdiff (0.4.0)
+    hashdiff (1.0.0)
     highline (1.6.18)
     hike (1.2.3)
     http_parser.rb (0.6.0)
@@ -555,7 +555,7 @@ GEM
     pry-byebug (3.4.3)
       byebug (>= 9.0, < 9.1)
       pry (~> 0.10)
-    public_suffix (3.0.3)
+    public_suffix (3.1.1)
     rabl (0.8.4)
       activesupport (>= 2.3.14)
     rack (1.4.7)
@@ -736,7 +736,7 @@ GEM
       nokogiri (~> 1.6)
       rubyzip (~> 1.0)
       selenium-webdriver (~> 3.0)
-    webmock (3.6.0)
+    webmock (3.6.2)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)