diff --git a/Gemfile.lock b/Gemfile.lock
index e9383094..5d095708 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -554,7 +554,7 @@ GEM
     scss_lint (0.58.0)
       rake (>= 0.9, < 13)
       sass (~> 3.5, >= 3.5.5)
-    sidekiq (6.1.2)
+    sidekiq (5.2.7)
       connection_pool (~> 2.2, >= 2.2.2)
       rack (>= 1.5.0)
       rack-protection (>= 1.5.0)