diff --git a/Gemfile b/Gemfile
index 6d8a7997..309581ac 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,7 +24,7 @@ gem 'redis', '<= 4.0.2'
 gem 'select2-rails'
 gem 'rufus-mnemo'
 gem 'sass-rails'
-gem 'sidekiq', '<= 5.1.3'
+gem 'sidekiq', '<= 5.2.1'
 gem 'slim', '<= 3.0.9'
 gem 'slim-rails', '<= 3.1.3'
 gem 'typhoeus', '<= 1.3.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 31c32990..ee246803 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -125,8 +125,8 @@ GEM
       rake (< 13.0)
     cleanroom (1.0.0)
     coderay (1.1.2)
-    concurrent-ruby (1.1.7)
-    connection_pool (2.2.2)
+    concurrent-ruby (1.1.9)
+    connection_pool (2.2.5)
     coveralls (0.7.1)
       multi_json (~> 1.3)
       rest-client
@@ -334,7 +334,7 @@ GEM
     pundit (2.1.0)
       activesupport (>= 3.0.0)
     rack (2.2.3)
-    rack-protection (2.0.7)
+    rack-protection (2.1.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -436,9 +436,8 @@ GEM
     semverse (3.0.0)
     shoulda-matchers (4.5.1)
       activesupport (>= 4.2.0)
-    sidekiq (5.1.3)
-      concurrent-ruby (~> 1.0)
-      connection_pool (~> 2.2, >= 2.2.0)
+    sidekiq (5.2.0)
+      connection_pool (~> 2.2, >= 2.2.2)
       rack-protection (>= 1.5.0)
       redis (>= 3.3.5, < 5)
     simplecov (0.14.0)
@@ -605,7 +604,7 @@ DEPENDENCIES
   select2-rails
   selenium-webdriver
   shoulda-matchers (~> 4.0)
-  sidekiq (<= 5.1.3)
+  sidekiq (<= 5.2.1)
   simplecov (<= 0.14)
   simplecov-console (<= 0.4)
   slim (<= 3.0.9)