diff --git a/Pro-Changes.md b/Pro-Changes.md
index f32c351a..0a496b79 100644
--- a/Pro-Changes.md
+++ b/Pro-Changes.md
@@ -4,6 +4,11 @@
 
 Please see [http://sidekiq.org/](http://sidekiq.org/) for more details and how to buy.
 
+5.0.1
+---------
+
+- Sidekiq::JobSet#scan and #find_job APIs have been promoted to Sidekiq OSS. [#4259]
+
 5.0.0
 ---------
 
diff --git a/lib/sidekiq/api.rb b/lib/sidekiq/api.rb
index 49bfcda6..a8aed935 100644
--- a/lib/sidekiq/api.rb
+++ b/lib/sidekiq/api.rb
@@ -525,7 +525,7 @@ module Sidekiq
       Sidekiq.redis { |c| c.zcard(name) }
     end
 
-    def scan(match, count: 100)
+    def scan(match, count = 100)
       return to_enum(:scan, match) unless block_given?
 
       match = "*#{match}*" unless match.include?("*")