diff --git a/samples/sample.properties b/samples/sample.properties
index ac5b2b9..c9f994f 100644
--- a/samples/sample.properties
+++ b/samples/sample.properties
@@ -15,6 +15,8 @@ applicationName = PythonKCLSample
 # The DefaultAWSCredentialsProviderChain checks several other providers, which is
 # described here:
 # http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/auth/DefaultAWSCredentialsProviderChain.html
+# The STSAssumeRoleSessionCredentialsProvider allows using assume-roles:
+# AWSCredentialsProvider = STSAssumeRoleSessionCredentialsProvider|arn:aws:iam::<uid>:role/<role_name>|<session>
 AWSCredentialsProvider = DefaultAWSCredentialsProviderChain
 
 # Appended to the user agent of the KCL. Does not impact the functionality of the
diff --git a/setup.py b/setup.py
index cc01899..3b3f483 100644
--- a/setup.py
+++ b/setup.py
@@ -64,6 +64,7 @@
     ('com.amazonaws', 'aws-java-sdk-s3', '1.11.272'),
     ('com.amazonaws', 'aws-java-sdk-kms', '1.11.272'),
     ('com.amazonaws', 'aws-java-sdk-core', '1.11.272'),
+    ('com.amazonaws', 'aws-java-sdk-sts', '1.11.272'),
     ('org.apache.httpcomponents', 'httpclient', '4.5.2'),
     ('org.apache.httpcomponents', 'httpcore', '4.4.4'),
     ('commons-codec', 'commons-codec', '1.9'),
@@ -79,7 +80,11 @@
     ('com.google.guava', 'guava', '18.0'),
     ('com.google.protobuf', 'protobuf-java', '2.6.1'),
     ('commons-lang', 'commons-lang', '2.6'),
-    ('commons-logging', 'commons-logging', '1.1.3')
+    ('commons-logging', 'commons-logging', '1.1.3'),
+#     ('ch.qos.logback', 'logback-classic', '1.1.7'),
+#     ('ch.qos.logback', 'logback-core', '1.1.7'),
+#     ('org.slf4j', 'slf4j-api', '1.7.21'),
+#     ('org.slf4j', 'jcl-over-slf4j', '1.7.21')
 ]