diff --git a/Gemfile b/Gemfile
index 44c6f1f7f8f..f86aae4c5f8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -229,7 +229,7 @@ group :development do
 end
 
 group :development, :test do
-  gem 'thin', '~> 1.7.0'
+  gem 'thin', '~> 1.7.1'
 
   gem 'pry-rails', '~> 0.3.6'
   gem 'pry-stack_explorer', '~> 0.4.9.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 8e7baff8f68..4d17a8671f1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -270,7 +270,7 @@ GEM
       nokogiri (>= 1.4.3)
     erbse (0.0.2)
     erubis (2.7.0)
-    eventmachine (1.2.0.1)
+    eventmachine (1.2.3)
     excon (0.52.0)
     execjs (2.7.0)
     factory_girl (4.7.0)
@@ -566,7 +566,7 @@ GEM
     syck (1.3.0)
     sys-filesystem (1.1.7)
       ffi
-    thin (1.7.0)
+    thin (1.7.1)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
@@ -727,7 +727,7 @@ DEPENDENCIES
   svg-graph (~> 2.1.0)
   syck (~> 1.3.0)
   sys-filesystem (~> 1.1.4)
-  thin (~> 1.7.0)
+  thin (~> 1.7.1)
   timecop (~> 0.8.1)
   transactional_lock!
   tzinfo-data (~> 1.2017.2)