diff --git a/lib/sync.js b/lib/sync.js
index 6b8576bd..8349ca64 100644
--- a/lib/sync.js
+++ b/lib/sync.js
@@ -13,7 +13,7 @@ module.exports = function (x, opts) {
     };
     var readFileSync = opts.readFileSync || fs.readFileSync;
     
-    var extensions = opts.extensions || [ '.js' ];
+    var extensions = opts.extensions || [ '.js', '.json' ];
     var y = opts.basedir
         || path.dirname(require.cache[__filename].parent.filename)
     ;
diff --git a/test/resolver.js b/test/resolver.js
index 3fb64f58..92b757e8 100644
--- a/test/resolver.js
+++ b/test/resolver.js
@@ -20,6 +20,25 @@ test('async foo', function (t) {
     });
 });
 
+test('async JSON', function (t) {
+    t.plan(3);
+    var dir = __dirname + '/resolver';
+    
+    resolve('./box', { basedir : dir }, function (err, res) {
+        if (err) t.fail(err);
+        t.equal(res, dir + '/box.json');
+    });
+    
+    resolve('./box.json', { basedir : dir }, function (err, res) {
+        if (err) t.fail(err);
+        t.equal(res, dir + '/box.json');
+    });
+    
+    resolve('box', { basedir : dir }, function (err) {
+        t.equal(err.message, "Cannot find module 'box'");
+    });
+});
+
 test('bar', function (t) {
     t.plan(2);
     var dir = __dirname + '/resolver';
diff --git a/test/resolver/box.json b/test/resolver/box.json
new file mode 100644
index 00000000..56a6051c
--- /dev/null
+++ b/test/resolver/box.json
@@ -0,0 +1 @@
+1
\ No newline at end of file
diff --git a/test/resolver_sync.js b/test/resolver_sync.js
index 80f5aa55..1e9458e0 100644
--- a/test/resolver_sync.js
+++ b/test/resolver_sync.js
@@ -21,6 +21,26 @@ test('foo', function (t) {
     t.end();
 });
 
+test('JSON', function (t) {
+    var dir = __dirname + '/resolver';
+    
+    t.equal(
+        resolve.sync('./box', { basedir: dir }),
+        dir + '/box.json'
+    );
+    
+    t.equal(
+        resolve.sync('./box.json', { basedir: dir }),
+        dir + '/box.json'
+    );
+    
+    t.throws(function () {
+        resolve.sync('box', { basedir : dir });
+    });
+    
+    t.end();
+});
+
 test('bar', function (t) {
     var dir = __dirname + '/resolver';