diff --git a/Gemfile b/Gemfile
index 537f6fcad6a..3d7be1d4342 100644
--- a/Gemfile
+++ b/Gemfile
@@ -272,3 +272,5 @@ gem 'faraday-retry'
 gem 'net-http'
 
 gem 'webrick', require: false
+
+gem "cgi", ">= 0.3.6", require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 5f1d66dbf2c..18926283bc7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,6 +97,7 @@ GEM
       xpath (~> 3.2)
     cbor (0.5.9.6)
     certified (1.0.0)
+    cgi (0.3.6)
     chunky_png (1.4.0)
     coderay (1.1.3)
     colored2 (3.1.2)
@@ -517,6 +518,7 @@ DEPENDENCIES
   capybara
   cbor
   certified
+  cgi (>= 0.3.6)
   colored2
   cose
   cppjieba_rb