diff --git a/Gemfile b/Gemfile
index 88b198c..6adf2cc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gem "mysql2", ">= 0.3.14"
 # NOTE: If you use PostgreSQL, you must still leave enabled the above mysql2
 # gem for Sphinx full text search to function.
 
-gem "thinking-sphinx", "~> 3.0.6"
+gem "thinking-sphinx", "~> 3.1.2"
 
 gem "uglifier", ">= 1.3.0"
 gem "jquery-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index bb49e40..06e20dd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,6 +43,8 @@ GEM
     htmlentities (4.3.2)
     i18n (0.6.11)
     innertube (1.1.0)
+    joiner (0.2.0)
+      activerecord (>= 3.1.0, < 4.1.0)
     jquery-rails (3.1.1)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
@@ -107,12 +109,13 @@ GEM
       activesupport (>= 3.0)
       sprockets (~> 2.8)
     sqlite3 (1.3.9)
-    thinking-sphinx (3.0.6)
+    thinking-sphinx (3.1.2)
       activerecord (>= 3.1.0)
       builder (>= 2.1.2)
       innertube (>= 1.0.2)
+      joiner (>= 0.2.0)
       middleware (>= 0.1.0)
-      riddle (>= 1.5.9)
+      riddle (>= 1.5.11)
     thor (0.19.1)
     thread_safe (0.3.4)
     tilt (1.4.1)
@@ -147,6 +150,6 @@ DEPENDENCIES
   rdiscount
   rspec-rails (~> 2.6)
   sqlite3
-  thinking-sphinx (~> 3.0.6)
+  thinking-sphinx (~> 3.1.2)
   uglifier (>= 1.3.0)
   unicorn