diff --git a/.gitignore b/.gitignore
index 5672901..0f86e9d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,5 @@
 dist
 /.idea
 _build
+env
+env/
diff --git a/example/example/app.py b/example/example/app.py
index 8abcfeb..d0f31ef 100644
--- a/example/example/app.py
+++ b/example/example/app.py
@@ -3,7 +3,7 @@
 from flask_s3 import FlaskS3, create_all
 
 app = Flask(__name__)
-app.config['S3_BUCKET_NAME'] = 'mybucketname'
+app.config['FLASKS3_BUCKET_NAME'] = 'mybucketname'
 app.config['USE_S3_DEBUG'] = True
 
 s3 = FlaskS3(app)
@@ -13,8 +13,9 @@ def index():
     template_str = """{{ url_for('static', filename="foo.js") }}"""
     return render_template_string(template_str)
 
+@app.route('/upload')
 def upload_all():
     create_all(app, user='MY_AWS_ID', password='MY_AWS_SECRET')
 
 if __name__ == '__main__':
-    app.run(debug=True)
\ No newline at end of file
+    app.run(debug=True)
diff --git a/flask_s3.py b/flask_s3.py
index d0825f8..d67589c 100644
--- a/flask_s3.py
+++ b/flask_s3.py
@@ -21,6 +21,7 @@
 from flask import url_for as flask_url_for
 import six
 
+
 logger = logging.getLogger('flask_s3')
 
 # Mapping for Header names to S3 parameters
@@ -173,8 +174,11 @@ def _bp_static_url(blueprint):
     return u
 
 
-def _gather_files(app, hidden, filepath_filter_regex=None):
+def _gather_files(app, hidden, filepath_filter_regex=None, repo_path=None):
     """ Gets all files in static folders and returns in dict."""
+
+    changed_files = _get_last_commited_files(repo_path)
+
     dirs = [(six.u(app.static_folder), app.static_url_path)]
     if hasattr(app, 'blueprints'):
         blueprints = app.blueprints.values()
@@ -200,11 +204,19 @@ def _gather_files(app, hidden, filepath_filter_regex=None):
                          # negative match.
                          (filepath_filter_regex == None or re.search(
                              filepath_filter_regex,
-                             os.path.join(relative_folder, x))))]
+                             os.path.join(relative_folder, x))) and
+                         (changed_files is None or os.path.join('static',relative_folder, x) in changed_files)
+                     )]
             if files:
                 valid_files[(static_folder, static_url_loc)].extend(files)
     return valid_files
 
+def _get_last_commited_files(repo_path):
+    from git import Repo
+    repo = Repo(repo_path)
+    last_commit = repo.iter_commits().next()
+    last_commit_parent = last_commit.parents[0]
+    return [x.b_path for x in last_commit.diff(last_commit_parent)]
 
 def _path_to_relative_url(path):
     """ Converts a folder and filename into a ralative url path """
@@ -338,6 +350,22 @@ def get_setting(name, app=None):
 def create_all(app, user=None, password=None, bucket_name=None,
                location=None, include_hidden=False,
                filepath_filter_regex=None, put_bucket_acl=True):
+    _process(app, user=None, password=None, bucket_name=None,
+             location=None, include_hidden=False,
+             filepath_filter_regex=None, put_bucket_acl=True)
+
+
+def update(app, user=None, password=None, bucket_name=None,
+           location=None, include_hidden=False,
+           filepath_filter_regex=None, put_bucket_acl=True, repo_path=None):
+    _process(app, user=None, password=None, bucket_name=None,
+             location=None, include_hidden=False,
+             filepath_filter_regex=None, put_bucket_acl=True, repo_path=repo_path)
+
+
+def _process(app, user=None, password=None, bucket_name=None,
+             location=None, include_hidden=False,
+             filepath_filter_regex=None, put_bucket_acl=True, repo_path=None):
     """
     Uploads of the static assets associated with a Flask application to
     Amazon S3.
@@ -412,7 +440,7 @@ def create_all(app, user=None, password=None, bucket_name=None,
 
     # build list of static files
     all_files = _gather_files(app, include_hidden,
-                              filepath_filter_regex=filepath_filter_regex)
+                              filepath_filter_regex=filepath_filter_regex, repo_path=repo_path)
     logger.debug("All valid files: %s" % all_files)
 
     # connect to s3
@@ -455,6 +483,7 @@ def create_all(app, user=None, password=None, bucket_name=None,
     else:
         _upload_files(s3, app, all_files, bucket_name)
 
+
 class FlaskS3(object):
     """
     The FlaskS3 object allows your application to use Flask-S3.
diff --git a/setup.py b/setup.py
index f84076a..5f3b736 100644
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,8 @@ def parse_version(asignee):
     install_requires=[
         'Flask',
         'Boto3>=1.1.1',
-        'six'
+        'six',
+        'gitpython'
     ],
     tests_require=['nose', 'mock'],
     classifiers=[