diff --git a/Gemfile b/Gemfile
index 4771c3579fa2279236e7914b85491ab847df86cf..f1751fb04563e0a2134f84219b50ab5e80c895b9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -33,7 +33,7 @@ gem "simple_captcha2", "0.4.0", require: "simple_captcha"
 
 # Background processing
 
-gem "sidekiq", "4.1.0"
+gem "sidekiq", "4.1.2"
 gem "sinatra", "1.4.7"
 
 # Scheduled processing
diff --git a/Gemfile.lock b/Gemfile.lock
index 61ff5d26cf85371e249245b77c744acf63118d9d..34ee7dd4ca4ead773cef435f1649400afcad7ac8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -133,7 +133,7 @@ GEM
       compass (~> 1.0.0)
       sass-rails (< 5.1)
       sprockets (< 2.13)
-    concurrent-ruby (1.0.0)
+    concurrent-ruby (1.0.2)
     configurate (0.3.1)
     connection_pool (2.2.0)
     crack (0.4.3)
@@ -716,7 +716,7 @@ GEM
       nokogiri (>= 1.4.1)
       trollop
     redcarpet (3.3.4)
-    redis (3.2.2)
+    redis (3.3.0)
     redis-namespace (1.5.2)
       redis (~> 3.0, >= 3.0.4)
     remotipart (1.2.1)
@@ -784,7 +784,7 @@ GEM
     shellany (0.0.1)
     shoulda-matchers (3.1.1)
       activesupport (>= 4.0.0)
-    sidekiq (4.1.0)
+    sidekiq (4.1.2)
       concurrent-ruby (~> 1.0)
       connection_pool (~> 2.2, >= 2.2.0)
       redis (~> 3.2, >= 3.2.1)
@@ -1028,7 +1028,7 @@ DEPENDENCIES
   sass-rails (= 5.0.4)
   selenium-webdriver (= 2.47.1)
   shoulda-matchers (= 3.1.1)
-  sidekiq (= 4.1.0)
+  sidekiq (= 4.1.2)
   sidekiq-cron (= 0.4.2)
   simple_captcha2 (= 0.4.0)
   simplecov (= 0.11.2)