diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@ setup(
     test_suite='docido.sdk.test.suite',
     zip_safe=True,
     install_requires=[
-        'elasticsearch>=1.6.0',
+        'elasticsearch==1.6.0',
         'Flask-OAuthlib>=0.8.0',
         'ProxyTypes==0.9',
         'python-dateutil>=2.4.2',
Freeze Elasticsearch pkg to <I>

Version <I> has just been released, and API has changed.