diff --git a/Gemfile.lock b/Gemfile.lock
index 2fce3e04b0..df9eab4288 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -194,8 +194,7 @@ GEM
       sass-rails (< 5.1)
       sprockets (< 4.0)
     concurrent-ruby (1.1.7)
-    crack (0.4.3)
-      safe_yaml (~> 1.0.0)
+    crack (0.4.4)
     css_parser (1.7.1)
       addressable
     daemons (1.3.1)
@@ -618,7 +617,6 @@ GEM
     ruby-progressbar (1.10.1)
     ruby-rc4 (0.1.5)
     rubyzip (1.3.0)
-    safe_yaml (1.0.5)
     sass (3.4.25)
     sass-rails (5.0.7)
       railties (>= 4.0.0, < 6)
@@ -687,7 +685,7 @@ GEM
       nokogiri (~> 1.6)
       rubyzip (>= 1.3.0)
       selenium-webdriver (>= 3.0, < 4.0)
-    webmock (3.9.1)
+    webmock (3.9.2)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)