diff --git a/src/tests/audition_tests/test_distance_from_best.py b/src/tests/audition_tests/test_distance_from_best.py
index 4eb7c1aee..ea8a01633 100644
--- a/src/tests/audition_tests/test_distance_from_best.py
+++ b/src/tests/audition_tests/test_distance_from_best.py
@@ -203,7 +203,7 @@ def test_BestDistancePlotter_plot():
 
 
 def test_BestDistancePlotter_plot_bounds():
-    class FakeDistanceTable(object):
+    class FakeDistanceTable:
         @property
         def observed_bounds(self):
             return {
diff --git a/src/tests/audition_tests/test_selection_rule_performance.py b/src/tests/audition_tests/test_selection_rule_performance.py
index 54a4812f3..eb759abaa 100644
--- a/src/tests/audition_tests/test_selection_rule_performance.py
+++ b/src/tests/audition_tests/test_selection_rule_performance.py
@@ -15,7 +15,7 @@
 TRAIN_END_TIMES = ["2014-01-01", "2015-01-01"]
 
 
-class MockSelectionRulePicker(object):
+class MockSelectionRulePicker:
     def results_for_rule(*args, **kwargs):
         return [
             {
diff --git a/src/tests/catwalk_tests/test_storage.py b/src/tests/catwalk_tests/test_storage.py
index 4050030ab..53c0a589d 100644
--- a/src/tests/catwalk_tests/test_storage.py
+++ b/src/tests/catwalk_tests/test_storage.py
@@ -24,7 +24,7 @@
 from tests.utils import CallSpy
 
 
-class SomeClass(object):
+class SomeClass:
 
     def __init__(self, val):
         self.val = val
diff --git a/src/tests/utils.py b/src/tests/utils.py
index b45507047..5d6ef405f 100644
--- a/src/tests/utils.py
+++ b/src/tests/utils.py
@@ -32,7 +32,7 @@ def fake_labels(length):
     return numpy.array([random.choice([True, False]) for i in range(0, length)])
 
 
-class MockTrainedModel(object):
+class MockTrainedModel:
     def predict_proba(self, dataset):
         return numpy.random.rand(len(dataset), len(dataset))
 
diff --git a/src/triage/component/architect/builders.py b/src/triage/component/architect/builders.py
index c1d75fb12..7844a066e 100644
--- a/src/triage/component/architect/builders.py
+++ b/src/triage/component/architect/builders.py
@@ -11,7 +11,7 @@
 from triage.util.pandas import downcast_matrix
 
 
-class BuilderBase(object):
+class BuilderBase:
     def __init__(
         self,
         db_config,
diff --git a/src/triage/component/architect/entity_date_table_generators.py b/src/triage/component/architect/entity_date_table_generators.py
index 728f14aa5..e58f9361b 100644
--- a/src/triage/component/architect/entity_date_table_generators.py
+++ b/src/triage/component/architect/entity_date_table_generators.py
@@ -7,7 +7,7 @@
 DEFAULT_ACTIVE_STATE = "active"
 
 
-class EntityDateTableGenerator(object):
+class EntityDateTableGenerator:
     """Create a table containing state membership on different dates
 
     The structure of the output table is:
diff --git a/src/triage/component/architect/feature_dictionary_creator.py b/src/triage/component/architect/feature_dictionary_creator.py
index 4d0082001..011b048f1 100644
--- a/src/triage/component/architect/feature_dictionary_creator.py
+++ b/src/triage/component/architect/feature_dictionary_creator.py
@@ -3,7 +3,7 @@
 from triage.util.structs import FeatureNameList
 
 
-class FeatureDictionaryCreator(object):
+class FeatureDictionaryCreator:
     def __init__(self, features_schema_name, db_engine):
         self.features_schema_name = features_schema_name
         self.db_engine = db_engine
diff --git a/src/triage/component/architect/feature_generators.py b/src/triage/component/architect/feature_generators.py
index d7c386d42..5855e7993 100644
--- a/src/triage/component/architect/feature_generators.py
+++ b/src/triage/component/architect/feature_generators.py
@@ -16,7 +16,7 @@
 )
 
 
-class FeatureGenerator(object):
+class FeatureGenerator:
     def __init__(
         self,
         db_engine,
diff --git a/src/triage/component/architect/feature_group_creator.py b/src/triage/component/architect/feature_group_creator.py
index 3b69daee2..2da3629a6 100644
--- a/src/triage/component/architect/feature_group_creator.py
+++ b/src/triage/component/architect/feature_group_creator.py
@@ -40,7 +40,7 @@ def all_subsetter(config_item, table, features):
     return features
 
 
-class FeatureGroupCreator(object):
+class FeatureGroupCreator:
     """Divides a feature dictionary into groups based on given criteria"""
 
     subsetters = {
diff --git a/src/triage/component/architect/feature_group_mixer.py b/src/triage/component/architect/feature_group_mixer.py
index 4873a2646..fa6e5b61a 100644
--- a/src/triage/component/architect/feature_group_mixer.py
+++ b/src/triage/component/architect/feature_group_mixer.py
@@ -67,7 +67,7 @@ def all_features(feature_groups):
     return [feature_dict]
 
 
-class FeatureGroupMixer(object):
+class FeatureGroupMixer:
     """Generates different combinations of feature groups
     based on a list of strategies"""
 
diff --git a/src/triage/component/architect/label_generators.py b/src/triage/component/architect/label_generators.py
index 056cddd39..6459f0e38 100644
--- a/src/triage/component/architect/label_generators.py
+++ b/src/triage/component/architect/label_generators.py
@@ -6,7 +6,7 @@
 DEFAULT_LABEL_NAME = "outcome"
 
 
-class LabelGeneratorNoOp(object):
+class LabelGeneratorNoOp:
     def generate_all_labels(self, labels_table, as_of_dates, label_timespans):
         logging.warning(
             "No label configuration is available, so no labels will be created"
@@ -21,7 +21,7 @@ def clean_up(self, labels_table_name):
         pass
 
 
-class LabelGenerator(object):
+class LabelGenerator:
     def __init__(self, db_engine, query, label_name=None, replace=True):
         self.db_engine = db_engine
         self.replace = replace
diff --git a/src/triage/component/architect/planner.py b/src/triage/component/architect/planner.py
index 3a2220895..8d916d7e3 100644
--- a/src/triage/component/architect/planner.py
+++ b/src/triage/component/architect/planner.py
@@ -6,7 +6,7 @@
 from . import utils, entity_date_table_generators
 
 
-class Planner(object):
+class Planner:
     def __init__(
         self,
         feature_start_time,
diff --git a/src/triage/component/architect/utils.py b/src/triage/component/architect/utils.py
index b13498085..ef1c8a414 100644
--- a/src/triage/component/architect/utils.py
+++ b/src/triage/component/architect/utils.py
@@ -129,7 +129,7 @@ def fake_labels(length):
     return numpy.array([random.choice([True, False]) for i in range(0, length)])
 
 
-class MockTrainedModel(object):
+class MockTrainedModel:
     def predict_proba(self, dataset):
         return numpy.random.rand(len(dataset), len(dataset))
 
diff --git a/src/triage/component/audition/__init__.py b/src/triage/component/audition/__init__.py
index 7f5c9f438..ee952927b 100644
--- a/src/triage/component/audition/__init__.py
+++ b/src/triage/component/audition/__init__.py
@@ -12,7 +12,7 @@
 from .pre_audition import PreAudition
 
 
-class Auditioner(object):
+class Auditioner:
     def __init__(
         self,
         db_engine,
@@ -354,7 +354,7 @@ def register_selection_rule_grid(self, rule_grid, plot=True):
             self.plot_selection_rules()
 
 
-class AuditionRunner(object):
+class AuditionRunner:
     def __init__(self, config_dict, db_engine, directory=None):
         self.dir = directory
         self.config = config_dict
diff --git a/src/triage/component/audition/distance_from_best.py b/src/triage/component/audition/distance_from_best.py
index 2c62d69e1..d348c152e 100644
--- a/src/triage/component/audition/distance_from_best.py
+++ b/src/triage/component/audition/distance_from_best.py
@@ -8,7 +8,7 @@
 from .plotting import plot_cats, plot_bounds
 
 
-class DistanceFromBestTable(object):
+class DistanceFromBestTable:
     def __init__(self, db_engine, models_table, distance_table):
         """A database table that stores the distance from models and the
         best model for that train end time for a variety of chosen metrics
@@ -207,7 +207,7 @@ def dataframe_as_of(self, model_group_ids, train_end_time):
         return base_df[base_df["train_end_time"] == train_end_time]
 
 
-class BestDistancePlotter(object):
+class BestDistancePlotter:
     def __init__(self, distance_from_best_table, directory=None):
         """Generate a plot illustrating the effect of different below-best maximum
         thresholds across the dataset.
diff --git a/src/triage/component/audition/model_group_performance.py b/src/triage/component/audition/model_group_performance.py
index b3d4daf1c..ba8d539e7 100644
--- a/src/triage/component/audition/model_group_performance.py
+++ b/src/triage/component/audition/model_group_performance.py
@@ -7,7 +7,7 @@
 from .utils import str_in_sql
 
 
-class ModelGroupPerformancePlotter(object):
+class ModelGroupPerformancePlotter:
     def __init__(self, distance_from_best_table, directory=None):
         """Generate a plot illustrating the performance of a model group over time
 
diff --git a/src/triage/component/audition/pre_audition.py b/src/triage/component/audition/pre_audition.py
index 74aa5869a..9da9d962d 100644
--- a/src/triage/component/audition/pre_audition.py
+++ b/src/triage/component/audition/pre_audition.py
@@ -1,7 +1,7 @@
 import pandas as pd
 
 
-class PreAudition(object):
+class PreAudition:
     def __init__(self, db_engine):
         """Prepare the model_groups and train_end_times for Auditioner to use
 
diff --git a/src/triage/component/audition/regrets.py b/src/triage/component/audition/regrets.py
index 66325ec76..a22bce113 100644
--- a/src/triage/component/audition/regrets.py
+++ b/src/triage/component/audition/regrets.py
@@ -6,7 +6,7 @@
 from .plotting import plot_cats, plot_bounds
 
 
-class SelectionRulePicker(object):
+class SelectionRulePicker:
     def __init__(self, distance_from_best_table):
         """Runs simulations of different model group selection rules
 
@@ -102,7 +102,7 @@ def model_group_from_rule(
         return bound_selection_rule.pick(localized_df, train_end_time)
 
 
-class SelectionRulePlotter(object):
+class SelectionRulePlotter:
     """Plot selection rules
 
     Args:
diff --git a/src/triage/component/audition/rules_maker.py b/src/triage/component/audition/rules_maker.py
index cdbd74e0e..cb56c6c9b 100644
--- a/src/triage/component/audition/rules_maker.py
+++ b/src/triage/component/audition/rules_maker.py
@@ -1,4 +1,4 @@
-class BaseRules(object):
+class BaseRules:
     def __init__(self):
         self._metric = None
         self._parameter = None
diff --git a/src/triage/component/audition/selection_rule_performance.py b/src/triage/component/audition/selection_rule_performance.py
index 983d9af3e..195af430c 100644
--- a/src/triage/component/audition/selection_rule_performance.py
+++ b/src/triage/component/audition/selection_rule_performance.py
@@ -3,7 +3,7 @@
 from .plotting import plot_cats
 
 
-class SelectionRulePerformancePlotter(object):
+class SelectionRulePerformancePlotter:
     """Plot regrets over time
 
     Generates a simple line chart with audition.BoundSelectionRule objects as
diff --git a/src/triage/component/audition/selection_rules.py b/src/triage/component/audition/selection_rules.py
index 1d11ea16c..f4d8cfb66 100644
--- a/src/triage/component/audition/selection_rules.py
+++ b/src/triage/component/audition/selection_rules.py
@@ -447,7 +447,7 @@ def wm(x):
 }
 
 
-class BoundSelectionRule(object):
+class BoundSelectionRule:
     """A selection rule bound with a set of arguments
 
     Args:
diff --git a/src/triage/component/audition/thresholding.py b/src/triage/component/audition/thresholding.py
index 4e617a2c5..26255a79e 100644
--- a/src/triage/component/audition/thresholding.py
+++ b/src/triage/component/audition/thresholding.py
@@ -91,7 +91,7 @@ def model_groups_filter(
     return model_group_ids
 
 
-class ModelGroupThresholder(object):
+class ModelGroupThresholder:
     def __init__(
         self,
         distance_from_best_table,
diff --git a/src/triage/component/catwalk/__init__.py b/src/triage/component/catwalk/__init__.py
index ed92a755e..25a0eb508 100644
--- a/src/triage/component/catwalk/__init__.py
+++ b/src/triage/component/catwalk/__init__.py
@@ -16,7 +16,7 @@
 TaskBatch = namedtuple('TaskBatch', ['parallelizable', 'tasks', 'description'])
 
 
-class ModelTrainTester(object):
+class ModelTrainTester:
     def __init__(
         self,
         matrix_storage_engine,
diff --git a/src/triage/component/catwalk/baselines/rankers.py b/src/triage/component/catwalk/baselines/rankers.py
index 8f8ad1ad6..045ffcb6e 100644
--- a/src/triage/component/catwalk/baselines/rankers.py
+++ b/src/triage/component/catwalk/baselines/rankers.py
@@ -3,7 +3,7 @@
 from triage.component.catwalk.exceptions import BaselineFeatureNotInMatrix
 
 
-class PercentileRankOneFeature(object):
+class PercentileRankOneFeature:
     def __init__(self, feature, descend=False):
         self.feature = feature  # which feature to rank on
         self.descend = (
diff --git a/src/triage/component/catwalk/baselines/thresholders.py b/src/triage/component/catwalk/baselines/thresholders.py
index 76ab8fb39..54fa42067 100644
--- a/src/triage/component/catwalk/baselines/thresholders.py
+++ b/src/triage/component/catwalk/baselines/thresholders.py
@@ -28,7 +28,7 @@ def get_operator_method(operator_string):
     return operator_method
 
 
-class SimpleThresholder(object):
+class SimpleThresholder:
     """ The simple thresholder applies a set of predetermined logical rules to a
     test matrix to classify entities. By default, it will classify entities as 1
     if they satisfy any of the rules. When 'and' is set as the logical_operator,
diff --git a/src/triage/component/catwalk/evaluation.py b/src/triage/component/catwalk/evaluation.py
index caab7facd..01607fc16 100644
--- a/src/triage/component/catwalk/evaluation.py
+++ b/src/triage/component/catwalk/evaluation.py
@@ -149,7 +149,7 @@ class MetricEvaluationResult(typing.NamedTuple):
     num_positive_labels: int
 
 
-class ModelEvaluator(object):
+class ModelEvaluator:
     """An object that can score models based on its known metrics"""
 
     """Available metric calculation functions
diff --git a/src/triage/component/catwalk/individual_importance/__init__.py b/src/triage/component/catwalk/individual_importance/__init__.py
index e5df8cc24..5b8ca772a 100644
--- a/src/triage/component/catwalk/individual_importance/__init__.py
+++ b/src/triage/component/catwalk/individual_importance/__init__.py
@@ -28,7 +28,7 @@ def save(self, importance_records, model_id, as_of_date, method_name):
 
 
 
-class IndividualImportanceCalculator(object):
+class IndividualImportanceCalculator:
     """Calculates and saves individual importance scores and rankings using different methods
 
     Args:
diff --git a/src/triage/component/catwalk/metrics.py b/src/triage/component/catwalk/metrics.py
index 054d54d29..35897d738 100644
--- a/src/triage/component/catwalk/metrics.py
+++ b/src/triage/component/catwalk/metrics.py
@@ -22,7 +22,7 @@
 import numpy
 
 
-class Metric(object):
+class Metric:
     """decorator for metrics: result will be a callable metric with an
     `greater_is_better` parameter defined as either True or False
     depending on whether larger or smaller metric values indicate
@@ -35,7 +35,7 @@ def __init__(self, greater_is_better):
         self.greater_is_better = greater_is_better
 
     def __call__(self, function, *params, **kwparams):
-        class DecoratedMetric(object):
+        class DecoratedMetric:
             def __init__(self, greater_is_better, function):
                 self.greater_is_better = greater_is_better
                 self.function = function
diff --git a/src/triage/component/catwalk/model_grouping.py b/src/triage/component/catwalk/model_grouping.py
index 9eda7109d..f15a97539 100644
--- a/src/triage/component/catwalk/model_grouping.py
+++ b/src/triage/component/catwalk/model_grouping.py
@@ -12,7 +12,7 @@
 ]
 
 
-class ModelGrouper(object):
+class ModelGrouper:
     """Assign a model group id to given model input based on default or custom configuration
 
     This class is a wrapper around the `get_model_group_id` stored procedure,
diff --git a/src/triage/component/catwalk/model_trainers.py b/src/triage/component/catwalk/model_trainers.py
index 97837697c..aaabc0345 100644
--- a/src/triage/component/catwalk/model_trainers.py
+++ b/src/triage/component/catwalk/model_trainers.py
@@ -41,7 +41,7 @@ def flatten_grid_config(grid_config):
             yield class_path, parameters
 
 
-class ModelTrainer(object):
+class ModelTrainer:
     """Trains a series of classifiers using the same training set
     Args:
         project_path (string) path to project folder,
diff --git a/src/triage/component/catwalk/predictors.py b/src/triage/component/catwalk/predictors.py
index 77e57d227..591469aa9 100644
--- a/src/triage/component/catwalk/predictors.py
+++ b/src/triage/component/catwalk/predictors.py
@@ -17,7 +17,7 @@ class ModelNotFoundError(ValueError):
     pass
 
 
-class Predictor(object):
+class Predictor:
     expected_matrix_ts_format = "%Y-%m-%d %H:%M:%S"
     available_tiebreakers = AVAILABLE_TIEBREAKERS
 
diff --git a/src/triage/component/catwalk/protected_groups_generators.py b/src/triage/component/catwalk/protected_groups_generators.py
index 7e943b86f..5ceb231f5 100644
--- a/src/triage/component/catwalk/protected_groups_generators.py
+++ b/src/triage/component/catwalk/protected_groups_generators.py
@@ -8,7 +8,7 @@
 from triage.component.catwalk.storage import MatrixStore
 
 
-class ProtectedGroupsGeneratorNoOp(object):
+class ProtectedGroupsGeneratorNoOp:
     def generate_all_dates(self, *args, **kwargs):
         logging.warning(
             "No bias audit configuration is available, so protected groups will not be created"
@@ -23,7 +23,7 @@ def as_dataframe(self, *args, **kwargs):
         return pandas.DataFrame()
 
 
-class ProtectedGroupsGenerator(object):
+class ProtectedGroupsGenerator:
     def __init__(self, db_engine, from_obj, attribute_columns, entity_id_column, knowledge_date_column, protected_groups_table_name, replace=True):
         self.db_engine = db_engine
         self.replace = replace
diff --git a/src/triage/component/catwalk/storage.py b/src/triage/component/catwalk/storage.py
index 682ef78f7..e8d37ba73 100644
--- a/src/triage/component/catwalk/storage.py
+++ b/src/triage/component/catwalk/storage.py
@@ -28,7 +28,7 @@
 from triage.util.pandas import downcast_matrix
 
 
-class Store(object):
+class Store:
     """Base class for classes which know how to access a file in a preset medium.
 
     Used to hold references to persisted objects with knowledge about how they can be accessed.
@@ -167,7 +167,7 @@ def open(self, *args, **kwargs):
         return open(self.path, *args, **kwargs)
 
 
-class ProjectStorage(object):
+class ProjectStorage:
     """Store and access files associated with a project.
 
     Args:
@@ -213,7 +213,7 @@ def model_storage_engine(self, model_directory=None):
         return ModelStorageEngine(self, model_directory)
 
 
-class ModelStorageEngine(object):
+class ModelStorageEngine:
     """Store arbitrary models in a given project storage using joblib
 
     Args:
@@ -249,7 +249,7 @@ def write(self, obj, model_hash):
         """Persist a model object using joblib. Also performs compression
 
         Args:
-            obj (object) A picklable model object
+            obj  (object) A picklable model object
             model_hash (string) An identifier, unique within this project, for the model
         """
         if self.should_cache:
@@ -294,7 +294,7 @@ def _get_store(self, model_hash):
         return self.project_storage.get_store(self.directories, model_hash)
 
 
-class MatrixStorageEngine(object):
+class MatrixStorageEngine:
     """Store matrices in a given project storage
 
     Args:
@@ -324,7 +324,7 @@ def get_store(self, matrix_uuid):
         )
 
 
-class MatrixStore(object):
+class MatrixStore:
     """Base class for classes that allow access of a matrix and its metadata.
 
     Subclasses should be scoped to a storage format (e.g. CSV)
@@ -592,7 +592,7 @@ def save(self):
             yaml.dump(self.metadata, fd, encoding="utf-8")
 
 
-class TestMatrixType(object):
+class TestMatrixType:
     string_name = "test"
     evaluation_obj = TestEvaluation
     prediction_obj = TestPrediction
@@ -601,7 +601,7 @@ class TestMatrixType(object):
     is_test = True
 
 
-class TrainMatrixType(object):
+class TrainMatrixType:
     string_name = "train"
     evaluation_obj = TrainEvaluation
     prediction_obj = TrainPrediction
diff --git a/src/triage/component/catwalk/subsetters.py b/src/triage/component/catwalk/subsetters.py
index db8d290c5..6e73b21fb 100644
--- a/src/triage/component/catwalk/subsetters.py
+++ b/src/triage/component/catwalk/subsetters.py
@@ -7,7 +7,7 @@
 from triage.component.catwalk.utils import (filename_friendly_hash, get_subset_table_name)
 from triage.component.results_schema import Subset
 
-class Subsetter(object):
+class Subsetter:
     def __init__(
         self,
         db_engine,
diff --git a/src/triage/component/collate/collate.py b/src/triage/component/collate/collate.py
index 06f916c4b..1ae173c2d 100644
--- a/src/triage/component/collate/collate.py
+++ b/src/triage/component/collate/collate.py
@@ -51,7 +51,7 @@ def split_distinct(quantity):
         return "", (q,)
 
 
-class AggregateExpression(object):
+class AggregateExpression:
     def __init__(
         self,
         aggregate1,
@@ -437,7 +437,7 @@ def __init__(
         )
 
 
-class Aggregation(object):
+class Aggregation:
     def __init__(
         self,
         aggregates,
diff --git a/src/triage/component/collate/from_obj.py b/src/triage/component/collate/from_obj.py
index 211b4f599..7dfa65ad5 100644
--- a/src/triage/component/collate/from_obj.py
+++ b/src/triage/component/collate/from_obj.py
@@ -7,7 +7,7 @@
 import sqlparse
 
 
-class FromObj(object):
+class FromObj:
     def __init__(self, from_obj, name, knowledge_date_column):
         self.from_obj = from_obj
         self.name = name
diff --git a/src/triage/component/collate/imputations.py b/src/triage/component/collate/imputations.py
index 35ac067b6..920cffd33 100644
--- a/src/triage/component/collate/imputations.py
+++ b/src/triage/component/collate/imputations.py
@@ -1,4 +1,4 @@
-class BaseImputation(object):
+class BaseImputation:
     """Base class for various imputation methods
     """
 
diff --git a/src/triage/component/postmodeling/contrast/model_evaluator.py b/src/triage/component/postmodeling/contrast/model_evaluator.py
index 2f685c1de..df9b6010e 100644
--- a/src/triage/component/postmodeling/contrast/model_evaluator.py
+++ b/src/triage/component/postmodeling/contrast/model_evaluator.py
@@ -29,7 +29,7 @@
 from triage.component.catwalk.storage import ProjectStorage, ModelStorageEngine, MatrixStorageEngine
 
 
-class ModelEvaluator(object):
+class ModelEvaluator:
     '''
     ModelExtractor class calls the model metadata from the database
     and hold model_id metadata features on each of the class attibutes.
diff --git a/src/triage/component/postmodeling/contrast/model_group_evaluator.py b/src/triage/component/postmodeling/contrast/model_group_evaluator.py
index e16f10644..22da8b913 100644
--- a/src/triage/component/postmodeling/contrast/model_group_evaluator.py
+++ b/src/triage/component/postmodeling/contrast/model_group_evaluator.py
@@ -20,7 +20,7 @@
 # Get indivual model information/metadata from Audition output
 
 
-class ModelGroupEvaluator(object):
+class ModelGroupEvaluator:
     '''
     ModelGroup class calls the model group metadata from the database
     and hold metadata features on each of the class attibutes.
diff --git a/src/triage/component/postmodeling/contrast/parameters.py b/src/triage/component/postmodeling/contrast/parameters.py
index 8ad0686e7..cd7a0afa6 100644
--- a/src/triage/component/postmodeling/contrast/parameters.py
+++ b/src/triage/component/postmodeling/contrast/parameters.py
@@ -12,7 +12,7 @@
 import json
 import warnings
 
-class PostmodelParameters(object):
+class PostmodelParameters:
     '''
     PostmodelParameters reads all parameters from a 'yaml' file and store them
     in this object to be used in other functions. Different metrics can be
diff --git a/src/triage/component/postmodeling/crosstabs.py b/src/triage/component/postmodeling/crosstabs.py
index 0aba134ff..40146acc4 100644
--- a/src/triage/component/postmodeling/crosstabs.py
+++ b/src/triage/component/postmodeling/crosstabs.py
@@ -4,7 +4,7 @@
 import yaml
 
 
-class CrosstabsConfigLoader(object):
+class CrosstabsConfigLoader:
     def __init__(self, config_path=None, config=None):
         self.output = {}
         self.models_list_query = None
diff --git a/src/triage/component/timechop/timechop.py b/src/triage/component/timechop/timechop.py
index a30300631..a5a7f1a26 100644
--- a/src/triage/component/timechop/timechop.py
+++ b/src/triage/component/timechop/timechop.py
@@ -30,7 +30,7 @@
 # }
 
 
-class Timechop(object):
+class Timechop:
     def __init__(
         self,
         feature_start_time,
diff --git a/src/triage/experiments/validate.py b/src/triage/experiments/validate.py
index d7f07f22a..8ee7a3380 100644
--- a/src/triage/experiments/validate.py
+++ b/src/triage/experiments/validate.py
@@ -14,7 +14,7 @@
 from triage.validation_primitives import string_is_tablesafe
 
 
-class Validator(object):
+class Validator:
     def __init__(self, db_engine=None, strict=True):
         self.db_engine = db_engine
         self.strict = strict