diff --git a/README.md b/README.md
index 001bd197..703619d1 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,8 @@ fs.src(['*.js', '!b*.js'])
 ```
 
 - Possible options for the second argument:
-  - cwd - Specify the working directory the folder is relative to. Default is `process.cwd()`
+  - cwd - Specify the working directory the folder is relative to.
+    - Default is `process.cwd()`
   - base - Specify the folder relative to the cwd. Default is where the glob begins. This is used to determine the file names when saving in `.dest()`
   - buffer - `true` or `false` if you want to buffer the file.
     - Default value is `true`
@@ -60,6 +61,9 @@ fs.src(['*.js', '!b*.js'])
     - `false` will disable writing the file to disk via `.dest()`
   - since - `Date` or `number` if you only want files that have been modified since the time specified.
   - passthrough - `true` or `false` if you want a duplex stream which passes items through and emits globbed files.
+    - Default is `false`.
+  - sourcemaps - `true` or `false` if you want files to have sourcemaps enabled.
+    - Default is `false`.
   - Any glob-related options are documented in [glob-stream] and [node-glob]
 - Returns a Readable stream by default, or a Duplex stream if the `passthrough` option is set to `true`.
 - This stream emits matching [vinyl] File objects
diff --git a/lib/src/index.js b/lib/src/index.js
index 1f2616b1..8cd13ac2 100644
--- a/lib/src/index.js
+++ b/lib/src/index.js
@@ -6,8 +6,9 @@ var gs = require('glob-stream');
 var File = require('vinyl');
 var duplexify = require('duplexify');
 var merge = require('merge-stream');
-
+var sourcemaps = require('gulp-sourcemaps');
 var filterSince = require('vinyl-filter-since');
+
 var getContents = require('./getContents');
 var resolveSymlinks = require('./resolveSymlinks');
 
@@ -18,7 +19,9 @@ function createFile(globFile, enc, cb) {
 function src(glob, opt) {
   var options = assign({
     read: true,
-    buffer: true
+    buffer: true,
+    sourcemaps: false,
+    passthrough: false
   }, opt);
   var pass, inputPass;
 
@@ -40,7 +43,7 @@ function src(glob, opt) {
     .pipe(resolveSymlinks())
     .pipe(through.obj(createFile));
 
-  if (options.since) {
+  if (options.since != null) {
     outputStream = outputStream
       .pipe(filterSince(options.since));
   }
@@ -50,11 +53,15 @@ function src(glob, opt) {
       .pipe(getContents(options));
   }
 
-  if (options.passthrough) {
+  if (options.passthrough === true) {
     inputPass = through.obj();
     outputStream = duplexify.obj(inputPass, merge(outputStream, inputPass));
   }
-
+  if (options.sourcemaps === true) {
+    outputStream = outputStream
+      .pipe(sourcemaps.init({loadMaps: true}));
+  }
+  globStream.on('error', outputStream.emit.bind(outputStream, 'error'));
   return outputStream;
 }
 
diff --git a/package.json b/package.json
index 2915ef1b..978eabb5 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
     "glob-stream": "^5.0.0",
     "glob-watcher": "^2.0.0",
     "graceful-fs": "^3.0.0",
+    "gulp-sourcemaps": "^1.5.2",
     "merge-stream": "^0.1.7",
     "mkdirp": "^0.5.0",
     "object-assign": "^2.0.0",