diff --git a/bin/b2json b/bin/b2json
index fb6e3b0..866510f 100755
--- a/bin/b2json
+++ b/bin/b2json
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 # encoding: UTF-8
 
 # --
diff --git a/bin/j2bson b/bin/j2bson
index b776b40..4d7cd4a 100755
--- a/bin/j2bson
+++ b/bin/j2bson
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 # encoding: UTF-8
 
 # --