diff --git a/benchmark/bm_string_scan_re.rb b/benchmark/bm_string_scan_re.rb
new file mode 100644
index 0000000000..b0d60201a9
--- /dev/null
+++ b/benchmark/bm_string_scan_re.rb
@@ -0,0 +1,2 @@
+str = Array.new(1_000, 'abc').join(',')
+1_000.times { str.scan(/abc/) }
diff --git a/benchmark/bm_string_scan_str.rb b/benchmark/bm_string_scan_str.rb
new file mode 100644
index 0000000000..42440bd948
--- /dev/null
+++ b/benchmark/bm_string_scan_str.rb
@@ -0,0 +1,2 @@
+str = Array.new(1_000, 'abc').join(',')
+1_000.times { str.scan('abc') }