diff --git a/setup.py b/setup.py
index 84176f0..84bbe34 100644
--- a/setup.py
+++ b/setup.py
@@ -53,7 +53,7 @@ def read(fname):
         'Programming Language :: Python :: 3.9',
     ],
 
-    install_requires=['retrying', 'sagemaker-training>=4.3.0', 'six>=1.12.0'],
+    install_requires=['retrying', 'sagemaker-training>=4.3.0,<=4.8.3', 'six>=1.12.0'],
     extras_require={
         'test': test_dependencies
     },
diff --git a/tox.ini b/tox.ini
index 9b732df..d99c873 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,7 +19,7 @@ exclude =
 max-complexity = 10
 ignore =
     C901,
-    E203,  # whitespace before ':': Black disagrees with and explicitly violates this.
+    E203,
     FI10,
     FI12,
     FI13,
@@ -27,7 +27,7 @@ ignore =
     FI15,
     FI16,
     FI17,
-    FI18,  # __future__ import "annotations" missing -> check only Python 3.7 compatible
+    FI18,
     FI50,
     FI51,
     FI52,