diff --git a/Library/Homebrew/sorbet/rbi/gems/parallel@1.20.1.rbi b/Library/Homebrew/sorbet/rbi/gems/parallel@1.21.0.rbi
similarity index 97%
rename from Library/Homebrew/sorbet/rbi/gems/parallel@1.20.1.rbi
rename to Library/Homebrew/sorbet/rbi/gems/parallel@1.21.0.rbi
index d205949e4f..3f0253e9e9 100644
--- a/Library/Homebrew/sorbet/rbi/gems/parallel@1.20.1.rbi
+++ b/Library/Homebrew/sorbet/rbi/gems/parallel@1.21.0.rbi
@@ -27,7 +27,7 @@ module Parallel
     def create_workers(job_factory, options, &block); end
     def extract_count_from_options(options); end
     def process_incoming_jobs(read, write, job_factory, options, &block); end
-    def replace_worker(job_factory, workers, i, options, blk); end
+    def replace_worker(job_factory, workers, index, options, blk); end
     def with_instrumentation(item, index, options); end
     def work_direct(job_factory, options, &block); end
     def work_in_processes(job_factory, options, &blk); end