diff --git a/Readme.md b/Readme.md
index f1e88cc..f2010d0 100644
--- a/Readme.md
+++ b/Readme.md
@@ -52,6 +52,8 @@ using the same options that were used for the original sandboxed module.
 * `sourceTransformersSingleOnly:` If false, the source transformers will not be run against
 modules required by the sandboxed module. By default it will take the same value as
 `singleOnly`.
+* `ignoreMissing:` If true, injected modules will not be required to have a corresponding file
+on the file system. By default this is false.
 
 ### SandboxedModule.require(moduleId, [options])
 
diff --git a/lib/sandboxed_module.js b/lib/sandboxed_module.js
index 6bf483c..7a7095e 100644
--- a/lib/sandboxed_module.js
+++ b/lib/sandboxed_module.js
@@ -157,7 +157,13 @@ SandboxedModule.prototype._createRecursiveRequireProxy = function() {
   var cache = Object.create(null);
   var required = this._getRequires();
   for (var key in required) {
-    var injectedFilename = requireLike(this.filename).resolve(key);
+    var injectedFilename;
+    try {
+      injectedFilename = requireLike(this.filename).resolve(key);
+    } catch(missing) {
+      if(!this._options.ignoreMissing) {throw missing;}
+      injectedFilename = key;
+    }
     cache[injectedFilename] = required[key];
   }
   cache[this.filename] = this.exports;
diff --git a/test/integration/test-inject-missing.js b/test/integration/test-inject-missing.js
new file mode 100644
index 0000000..357d174
--- /dev/null
+++ b/test/integration/test-inject-missing.js
@@ -0,0 +1,9 @@
+var assert = require('assert');
+var SandboxedModule = require('../..');
+
+var foo = SandboxedModule.require('../fixture/foo', {
+	"requires": {"doesNotExist": {}},
+	"ignoreMissing": true
+});
+assert.strictEqual(foo.foo, 'foo');
+assert.strictEqual(foo.bar, 'bar');