diff --git a/README.md b/README.md
index 82830f4..b805949 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/pre-commit/pre-commit-hooks.svg?branch=master)](https://travis-ci.org/pre-commit/pre-commit-hooks)
+[![Build Status](https://travis-ci.org/CalthorpeAnalytics/pre-commit-hooks.svg?branch=master)](https://travis-ci.org/CalthorpeAnalytics/pre-commit-hooks)
 [![Coverage Status](https://coveralls.io/repos/github/pre-commit/pre-commit-hooks/badge.svg?branch=master)](https://coveralls.io/github/pre-commit/pre-commit-hooks?branch=master)
 [![Build status](https://ci.appveyor.com/api/projects/status/dfcpng35u4g0r0t1/branch/master?svg=true)](https://ci.appveyor.com/project/asottile/pre-commit-hooks/branch/master)
 
diff --git a/pre_commit_hooks/check_yaml.py b/pre_commit_hooks/check_yaml.py
index 9fbbd88..153adda 100644
--- a/pre_commit_hooks/check_yaml.py
+++ b/pre_commit_hooks/check_yaml.py
@@ -49,9 +49,14 @@ def check_yaml(argv=None):
             'Implies --allow-multiple-documents'
         ),
     )
+    parser.add_argument('--ignore-tags', type=lambda s: s.split(','), default=[],
+                        help='Custom tags to ignore.')
     parser.add_argument('filenames', nargs='*', help='Yaml filenames to check.')
     args = parser.parse_args(argv)
 
+    for tag in args.ignore_tags:
+        Loader.add_constructor(tag, lambda *a, **k: None)
+
     load_fn = LOAD_FNS[Key(multi=args.multi, unsafe=args.unsafe)]
 
     retval = 0
diff --git a/setup.py b/setup.py
index bc10172..50f2f83 100644
--- a/setup.py
+++ b/setup.py
@@ -25,10 +25,11 @@ setup(
     packages=find_packages(exclude=('tests*', 'testing*')),
     install_requires=[
         # quickfix to prevent pycodestyle conflicts
-        'flake8!=2.5.3',
-        'autopep8>=1.3',
-        'pyyaml',
-        'six',
+        'flake8==3.5.0',
+        'autopep8==1.3.5',
+        'pycodestyle==2.3.1',
+        'pyyaml==3.12',
+        'six==1.11.0',
     ],
     entry_points={
         'console_scripts': [