diff --git a/tests/e2e/Gemfile b/tests/e2e/Gemfile
index f252eb8..5ade82d 100644
--- a/tests/e2e/Gemfile
+++ b/tests/e2e/Gemfile
@@ -3,7 +3,7 @@
 source 'https://rubygems.org'
 
 # Simple, efficient background processing for Ruby.
-gem 'sidekiq', '~> 5.1', '>= 5.1.1'
+gem 'sidekiq', '~> 6.5'
 # Extends String class or add a ColorizedString with methods to set text color,
 # background color and text effects.
 gem 'colorize', '~> 0.8.1'
diff --git a/tests/e2e/Gemfile.lock b/tests/e2e/Gemfile.lock
index 0036b36..7f05237 100644
--- a/tests/e2e/Gemfile.lock
+++ b/tests/e2e/Gemfile.lock
@@ -2,23 +2,20 @@ GEM
   remote: https://rubygems.org/
   specs:
     colorize (0.8.1)
-    connection_pool (2.2.2)
+    connection_pool (2.5.0)
     rack (2.2.13)
-    rack-protection (2.0.5)
-      rack
-    redis (4.1.2)
-    sidekiq (5.2.7)
-      connection_pool (~> 2.2, >= 2.2.2)
-      rack (>= 1.5.0)
-      rack-protection (>= 1.5.0)
-      redis (>= 3.3.5, < 5)
+    redis (4.8.1)
+    sidekiq (6.5.10)
+      connection_pool (>= 2.2.5, < 3)
+      rack (~> 2.0)
+      redis (>= 4.5.0, < 5)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   colorize (~> 0.8.1)
-  sidekiq (~> 5.1, >= 5.1.1)
+  sidekiq (~> 6.5)
 
 BUNDLED WITH
    2.3.22