diff --git a/Gemfile b/Gemfile
index a4b56aaa7d..53044252a0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -36,7 +36,7 @@ gem "sass", github: "sass/sass", branch: "stable", require: false
 gem "rb-inotify", github: "matthewd/rb-inotify", branch: "close-handling", require: false
 
 group :doc do
-  gem "sdoc", "1.0.0.beta1"
+  gem "sdoc", "1.0.0.beta2"
   gem "redcarpet", "~> 3.2.3", platforms: :ruby
   gem "w3c_validators"
   gem "kindlerb", "0.1.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index 4f4401ca85..d4059c607d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -210,7 +210,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.3)
+    json (2.0.2)
     kindlerb (0.1.1)
       mustache
       nokogiri
@@ -276,8 +276,7 @@ GEM
       loofah (~> 2.0)
     rake (11.3.0)
     rb-fsevent (0.9.7)
-    rdoc (4.2.2)
-      json (~> 1.4)
+    rdoc (5.0.0.beta2)
     redcarpet (3.2.3)
     redis (3.3.1)
     redis-namespace (1.5.2)
@@ -296,8 +295,8 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    sdoc (1.0.0.beta1)
-      rdoc (~> 4.0)
+    sdoc (1.0.0.beta2)
+      rdoc (= 5.0.0.beta2)
     selenium-webdriver (2.53.4)
       childprocess (~> 0.5)
       rubyzip (~> 1.0)
@@ -407,7 +406,7 @@ DEPENDENCIES
   resque-scheduler
   sass!
   sass-rails
-  sdoc (= 1.0.0.beta1)
+  sdoc (= 1.0.0.beta2)
   sequel
   sidekiq
   sneakers