diff --git a/benchmark/capture-assign.rb b/benchmark/capture-assign.rb
old mode 100644
new mode 100755
index e7ad49ba..7a127ad2
--- a/benchmark/capture-assign.rb
+++ b/benchmark/capture-assign.rb
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require "liquid"
 require "benchmark/ips"
 
diff --git a/benchmark/end-with-vs-regexp b/benchmark/end-with-vs-regexp
old mode 100644
new mode 100755
index 76f0312b..2ba5a307
--- a/benchmark/end-with-vs-regexp
+++ b/benchmark/end-with-vs-regexp
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'benchmark/ips'
 
 Benchmark.ips do |x|
diff --git a/benchmark/file-dir-ensure-trailing-slash b/benchmark/file-dir-ensure-trailing-slash
old mode 100644
new mode 100755
diff --git a/benchmark/flat-map b/benchmark/flat-map
old mode 100644
new mode 100755
index 547bcee1..18f0cfdb
--- a/benchmark/flat-map
+++ b/benchmark/flat-map
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'benchmark/ips'
 
 enum = (0..50).to_a
diff --git a/benchmark/hash-fetch b/benchmark/hash-fetch
old mode 100644
new mode 100755
index 35708357..d7427d53
--- a/benchmark/hash-fetch
+++ b/benchmark/hash-fetch
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'benchmark/ips'
 
 h = {:bar => 'uco'}
diff --git a/benchmark/jekyll-sanitize-path b/benchmark/jekyll-sanitize-path
old mode 100644
new mode 100755
diff --git a/benchmark/proc-call-vs-yield b/benchmark/proc-call-vs-yield
old mode 100644
new mode 100755
index 3d55979b..9b4ad375
--- a/benchmark/proc-call-vs-yield
+++ b/benchmark/proc-call-vs-yield
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'benchmark/ips'
 
 def fast
diff --git a/benchmark/regexp-vs-include.rb b/benchmark/regexp-vs-include.rb
old mode 100644
new mode 100755
diff --git a/benchmark/sequential-assignment b/benchmark/sequential-assignment
old mode 100644
new mode 100755
index 945e982b..790e995c
--- a/benchmark/sequential-assignment
+++ b/benchmark/sequential-assignment
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'benchmark/ips'
 
 Benchmark.ips do |x|
diff --git a/benchmark/string-concat b/benchmark/string-concat
old mode 100644
new mode 100755
index c4a91748..c5397088
--- a/benchmark/string-concat
+++ b/benchmark/string-concat
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'benchmark/ips'
 
 url = "http://jekyllrb.com"
diff --git a/benchmark/string-replacement b/benchmark/string-replacement
old mode 100644
new mode 100755
index 36de613c..f522cfef
--- a/benchmark/string-replacement
+++ b/benchmark/string-replacement
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'benchmark/ips'
 
 def str
diff --git a/benchmark/symbol-to-proc b/benchmark/symbol-to-proc
old mode 100644
new mode 100755
index bc08b2f2..7b568c47
--- a/benchmark/symbol-to-proc
+++ b/benchmark/symbol-to-proc
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'benchmark/ips'
 
 Benchmark.ips do |x|