diff --git a/Changes.md b/Changes.md
index c46861aba..db52c5d9a 100644
--- a/Changes.md
+++ b/Changes.md
@@ -24,6 +24,7 @@ SomeJob.set("sync": true).perform_async(args...) # will run via perform_inline
 ```
 bin/rails generate sidekiq:job ProcessOrderJob
 ```
+- Fix job retries losing CurrentAttributes [#5090]
 
 6.3.1
 ---------
diff --git a/lib/sidekiq/middleware/current_attributes.rb b/lib/sidekiq/middleware/current_attributes.rb
index 079538a03..f62b587bb 100644
--- a/lib/sidekiq/middleware/current_attributes.rb
+++ b/lib/sidekiq/middleware/current_attributes.rb
@@ -20,7 +20,12 @@ def initialize(cattr)
       end
 
       def call(_, job, _, _)
-        job["cattr"] = @klass.attributes
+        attrs = @klass.attributes
+        if job.has_key?("cattr")
+          job["cattr"].merge!(attrs)
+        else
+          job["cattr"] = attrs
+        end
         yield
       end
     end