diff --git a/new_problem b/new_problem
--- a/new_problem
+++ b/new_problem
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 
 # new_problem:
 #  * creates a directory for a problem in the current directory,
diff --git a/templates/check_wrapper b/templates/check_wrapper
--- a/templates/check_wrapper
+++ b/templates/check_wrapper
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 
 #
 # This is a check script wrapper.  It read all required information
diff --git a/test/data/ev/test_memory/script/check b/test/data/ev/test_memory/script/check
--- a/test/data/ev/test_memory/script/check
+++ b/test/data/ev/test_memory/script/check
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 
 problem_home = ENV['PROBLEM_HOME']
 require "#{problem_home}/script/test_dsl.rb"
diff --git a/test/data/ev/test_normal/script/check b/test/data/ev/test_normal/script/check
--- a/test/data/ev/test_normal/script/check
+++ b/test/data/ev/test_normal/script/check
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 
 problem_home = ENV['PROBLEM_HOME']
 require "#{problem_home}/script/test_dsl.rb"
diff --git a/test/data/ev/test_timeout/script/check b/test/data/ev/test_timeout/script/check
--- a/test/data/ev/test_timeout/script/check
+++ b/test/data/ev/test_timeout/script/check
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 
 problem_home = ENV['PROBLEM_HOME']
 require "#{problem_home}/script/test_dsl.rb"
diff --git a/test/data/ev/test_yesno/script/check b/test/data/ev/test_yesno/script/check
--- a/test/data/ev/test_yesno/script/check
+++ b/test/data/ev/test_yesno/script/check
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 
 problem_home = ENV['PROBLEM_HOME']
 require "#{problem_home}/script/test_dsl.rb"
diff --git a/test/data/test_request/problems/test_normal/script/check b/test/data/test_request/problems/test_normal/script/check
--- a/test/data/test_request/problems/test_normal/script/check
+++ b/test/data/test_request/problems/test_normal/script/check
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 
 problem_home = ENV['PROBLEM_HOME']
 require "#{problem_home}/script/test_dsl.rb"