diff --git a/README.md b/README.md
index 11a2eb7..0ee1f9c 100644
--- a/README.md
+++ b/README.md
@@ -120,11 +120,9 @@ This library is released under the MIT license. See MIT-LICENSE.txt for details
 Specs
 =====
 
-This project uses [telescope](https://github.com/norman/telescope) for its specs. In order to run them, install it and then:
+This project uses [busted](https://github.com/Olivine-Labs/busted) for its specs. In order to run them, install it and then:
 
 ```
 cd /path/to/where/the/spec/folder/is
-tsc spec/*
+busted spec/*
 ```
-
-I would love to use [busted](http://olivinelabs.com/busted/), but it has some incompatibility with `debug.sethook(f, "", quota)` and the tests just hanged up.
diff --git a/spec/sandbox_spec.lua b/spec/sandbox_spec.lua
index 7191ed5..d1e9465 100644
--- a/spec/sandbox_spec.lua
+++ b/spec/sandbox_spec.lua
@@ -5,44 +5,44 @@ describe('sandbox.run', function()
   describe('when handling base cases', function()
     it('can run harmless functions', function()
       local r = sandbox.run(function() return 'hello' end)
-      assert_equal(r, 'hello')
+      assert.equal(r, 'hello')
     end)
 
     it('can run harmless strings', function()
       local r = sandbox.run("return 'hello'")
-      assert_equal(r, 'hello')
+      assert.equal(r, 'hello')
     end)
 
     it('has access to safe methods', function()
-      assert_equal(10,      sandbox.run("return tonumber('10')"))
-      assert_equal('HELLO', sandbox.run("return string.upper('hello')"))
-      assert_equal(1,       sandbox.run("local a = {3,2,1}; table.sort(a); return a[1]"))
-      assert_equal(10,      sandbox.run("return math.max(1,10)"))
+      assert.equal(10,      sandbox.run("return tonumber('10')"))
+      assert.equal('HELLO', sandbox.run("return string.upper('hello')"))
+      assert.equal(1,       sandbox.run("local a = {3,2,1}; table.sort(a); return a[1]"))
+      assert.equal(10,      sandbox.run("return math.max(1,10)"))
     end)
 
     it('does not allow access to not-safe stuff', function()
-      assert_error(function() sandbox.run('return setmetatable({}, {})') end)
-      assert_error(function() sandbox.run('return string.rep("hello", 5)') end)
+      assert.error(function() sandbox.run('return setmetatable({}, {})') end)
+      assert.error(function() sandbox.run('return string.rep("hello", 5)') end)
     end)
   end)
 
   describe('when handling string.rep', function()
     it('does not allow pesky string:rep', function()
-      assert_error(function() sandbox.run('return ("hello"):rep(5)') end)
+      assert.error(function() sandbox.run('return ("hello"):rep(5)') end)
     end)
 
     it('restores the value of string.rep', function()
       sandbox.run("")
-      assert_equal('hellohello', string.rep('hello', 2))
+      assert.equal('hellohello', string.rep('hello', 2))
     end)
 
     it('restores string.rep even if there is an error', function()
-      assert_error(function() sandbox.run("error('foo')") end)
-      assert_equal('hellohello', string.rep('hello', 2))
+      assert.error(function() sandbox.run("error('foo')") end)
+      assert.equal('hellohello', string.rep('hello', 2))
     end)
 
     it('passes parameters to the function', function()
-      assert_equal(sandbox.run(function(a,b) return a + b end, {}, 1,2), 3)
+      assert.equal(sandbox.run(function(a,b) return a + b end, {}, 1,2), 3)
     end)
   end)
 
@@ -50,19 +50,19 @@ describe('sandbox.run', function()
   describe('when the sandboxed function tries to modify the base environment', function()
 
     it('does not allow modifying the modules', function()
-      assert_error(function() sandbox.run("string.foo = 1") end)
-      assert_error(function() sandbox.run("string.char = 1") end)
+      assert.error(function() sandbox.run("string.foo = 1") end)
+      assert.error(function() sandbox.run("string.char = 1") end)
     end)
 
     it('does not persist modifications of base functions', function()
       sandbox.run('error = function() end')
-      assert_error(function() sandbox.run("error('this should be raised')") end)
+      assert.error(function() sandbox.run("error('this should be raised')") end)
     end)
 
     it('DOES persist modification to base functions when they are provided by the base env', function()
       local env = {['next'] = 'hello'}
       sandbox.run('next = "bye"', {env=env})
-      assert_equal(env['next'], 'bye')
+      assert.equal(env['next'], 'bye')
     end)
   end)
 
@@ -70,21 +70,21 @@ describe('sandbox.run', function()
   describe('when given infinite loops', function()
 
     it('throws an error with infinite loops', function()
-      assert_error(function() sandbox.run("while true do end") end)
+      assert.error(function() sandbox.run("while true do end") end)
     end)
 
     it('restores string.rep even after a while true', function()
-      assert_error(function() sandbox.run("while true do end") end)
-      assert_equal('hellohello', string.rep('hello', 2))
+      assert.error(function() sandbox.run("while true do end") end)
+      assert.equal('hellohello', string.rep('hello', 2))
     end)
 
     it('accepts a quota param', function()
-      assert_not_error(function() sandbox.run("for i=1,100 do end") end)
-      assert_error(function() sandbox.run("for i=1,100 do end", {quota = 20}) end)
+      assert.has_no.errors(function() sandbox.run("for i=1,100 do end") end)
+      assert.error(function() sandbox.run("for i=1,100 do end", {quota = 20}) end)
     end)
 
     it('does not use quotes if the quote param is false', function()
-      assert_not_error(function() sandbox.run("for i=1,1000000 do end", {quota = false}) end)
+      assert.has_no.errors(function() sandbox.run("for i=1,1000000 do end", {quota = false}) end)
     end)
 
   end)
@@ -93,18 +93,18 @@ describe('sandbox.run', function()
   describe('when given an env option', function()
     it('is available on the sandboxed env as the _G variable', function()
       local env = {foo = 1}
-      assert_equal(1, sandbox.run("return foo", {env = env}))
-      assert_equal(env, sandbox.run("return _G", {env = env}))
+      assert.equal(1, sandbox.run("return foo", {env = env}))
+      assert.equal(env, sandbox.run("return _G", {env = env}))
     end)
 
     it('does not hide base env', function()
-      assert_equal('HELLO', sandbox.run("return string.upper(foo)", {env = {foo = 'hello'}}))
+      assert.equal('HELLO', sandbox.run("return string.upper(foo)", {env = {foo = 'hello'}}))
     end)
 
     it('can modify the env', function()
       local env = {foo = 1}
       sandbox.run("foo = 2", {env = env})
-      assert_equal(env.foo, 2)
+      assert.equal(env.foo, 2)
     end)
   end)