diff --git a/muskrat/producer.py b/muskrat/producer.py
index 4270f9f..8d382e0 100644
--- a/muskrat/producer.py
+++ b/muskrat/producer.py
@@ -88,7 +88,7 @@ def __init__(self, **kwargs):
     @property
     def s3conn(self):
         if self._s3conn is None:
-            self._s3conn = boto.connect_s3( self.config.s3_key, self.config.s3_secret )
+            self._s3conn = boto.connect_s3( self.config.s3_key, self.config.s3_secret, host=self.config.s3_host )
         return self._s3conn
 
     @property
diff --git a/muskrat/tests/test_producer.py b/muskrat/tests/test_producer.py
index cd1ef09..14fb612 100644
--- a/muskrat/tests/test_producer.py
+++ b/muskrat/tests/test_producer.py
@@ -23,6 +23,8 @@
 
 TEST_KEY_PREFIX = 'Muskrat.Producer'
 
+boto.config.add_section('s3')
+boto.config.set('s3', 'use-sigv4', 'True')
 
 class TestProducerBase( unittest.TestCase ):
 
@@ -70,7 +72,7 @@ class TestS3Producer( TestProducerBase ):
 
     def setUp(self):
         super( TestS3Producer, self ).setUp()
-        self.conn = boto.connect_s3( config.s3_key, config.s3_secret )
+        self.conn = boto.connect_s3( config.s3_key, config.s3_secret, host=config.s3_host )
         self.bucket = self.conn.get_bucket( config.s3_bucket )
         self.key += '.Test.S3Producer'