diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 036781edaa..4666ff5eea 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,6 +6,7 @@ CHANGELOG
 ==========
 
 * bug-fix: Session: don't allow get_execution_role() to return an ARN that's not a role but has "role" in the name
+* bug-fix: Remove ``__all__`` from ``__init__.py`` files
 
 1.16.3
 ======
diff --git a/src/sagemaker/chainer/__init__.py b/src/sagemaker/chainer/__init__.py
index fec881b353..41b4657ec2 100644
--- a/src/sagemaker/chainer/__init__.py
+++ b/src/sagemaker/chainer/__init__.py
@@ -12,7 +12,5 @@
 # language governing permissions and limitations under the License.
 from __future__ import absolute_import
 
-from sagemaker.chainer.estimator import Chainer
-from sagemaker.chainer.model import ChainerModel, ChainerPredictor
-
-__all__ = [Chainer, ChainerModel, ChainerPredictor]
+from sagemaker.chainer.estimator import Chainer  # noqa: F401
+from sagemaker.chainer.model import ChainerModel, ChainerPredictor  # noqa: F401
diff --git a/src/sagemaker/local/__init__.py b/src/sagemaker/local/__init__.py
index 3aa8c44267..167b07ff2a 100644
--- a/src/sagemaker/local/__init__.py
+++ b/src/sagemaker/local/__init__.py
@@ -12,7 +12,5 @@
 # language governing permissions and limitations under the License.
 from __future__ import absolute_import
 
-from .local_session import (file_input, LocalSession, LocalSagemakerRuntimeClient,
-                            LocalSagemakerClient)
-
-__all__ = [file_input, LocalSession, LocalSagemakerClient, LocalSagemakerRuntimeClient]
+from .local_session import (file_input, LocalSagemakerClient,  # noqa: F401
+                            LocalSagemakerRuntimeClient, LocalSession)
diff --git a/src/sagemaker/pytorch/__init__.py b/src/sagemaker/pytorch/__init__.py
index 2d2f81da7a..2e8db2d49e 100644
--- a/src/sagemaker/pytorch/__init__.py
+++ b/src/sagemaker/pytorch/__init__.py
@@ -11,7 +11,6 @@
 # ANY KIND, either express or implied. See the License for the specific
 # language governing permissions and limitations under the License.
 from __future__ import absolute_import
-from sagemaker.pytorch.estimator import PyTorch
-from sagemaker.pytorch.model import PyTorchModel, PyTorchPredictor
 
-__all__ = [PyTorch, PyTorchModel, PyTorchPredictor]
+from sagemaker.pytorch.estimator import PyTorch  # noqa: F401
+from sagemaker.pytorch.model import PyTorchModel, PyTorchPredictor  # noqa: F401
diff --git a/src/sagemaker/rl/__init__.py b/src/sagemaker/rl/__init__.py
index 62a0c1e934..cf7b222c93 100644
--- a/src/sagemaker/rl/__init__.py
+++ b/src/sagemaker/rl/__init__.py
@@ -12,7 +12,5 @@
 # language governing permissions and limitations under the License.
 from __future__ import absolute_import
 
-from sagemaker.rl.estimator import (RLEstimator, RLToolkit, RLFramework,
+from sagemaker.rl.estimator import (RLEstimator, RLFramework, RLToolkit,  # noqa: F401
                                     TOOLKIT_FRAMEWORK_VERSION_MAP)
-
-__all__ = [RLEstimator, RLToolkit, RLFramework, TOOLKIT_FRAMEWORK_VERSION_MAP]
diff --git a/src/sagemaker/sklearn/__init__.py b/src/sagemaker/sklearn/__init__.py
index 9a6e89befa..f9b7b55d53 100644
--- a/src/sagemaker/sklearn/__init__.py
+++ b/src/sagemaker/sklearn/__init__.py
@@ -12,7 +12,5 @@
 # language governing permissions and limitations under the License.
 from __future__ import absolute_import
 
-from sagemaker.sklearn.estimator import SKLearn
-from sagemaker.sklearn.model import SKLearnModel, SKLearnPredictor
-
-__all__ = [SKLearn, SKLearnModel, SKLearnPredictor]
+from sagemaker.sklearn.estimator import SKLearn  # noqa: F401
+from sagemaker.sklearn.model import SKLearnModel, SKLearnPredictor  # noqa: F401
diff --git a/src/sagemaker/sparkml/__init__.py b/src/sagemaker/sparkml/__init__.py
index b7575b23dc..e724ac8c9b 100644
--- a/src/sagemaker/sparkml/__init__.py
+++ b/src/sagemaker/sparkml/__init__.py
@@ -12,6 +12,4 @@
 # language governing permissions and limitations under the License.
 from __future__ import absolute_import
 
-from sagemaker.sparkml.model import SparkMLModel, SparkMLPredictor
-
-__all__ = [SparkMLModel, SparkMLPredictor]
+from sagemaker.sparkml.model import SparkMLModel, SparkMLPredictor  # noqa: F401