diff --git a/setup.py b/setup.py
index 2340284b3e0bf..cca4b6731a7f3 100644
--- a/setup.py
+++ b/setup.py
@@ -690,9 +690,11 @@ def is_package_excluded(package: str, exclusion_list: List[str]):
 INSTALL_REQUIREMENTS = [
     'alembic>=1.2, <2.0',
     'argcomplete~=1.10',
-    'attrs~=20.0',
+    'attrs>=20.0, <21.0',
     'cached_property~=1.5',
-    'cattrs~=1.0',
+    # cattrs >= 1.1.0 dropped support for Python 3.6
+    'cattrs>=1.0, <1.1.0;python_version<="3.6"',
+    'cattrs>=1.0, <2.0;python_version>"3.7"',
     'colorlog==4.0.2',
     'connexion[swagger-ui,flask]>=2.6.0,<3',
     'croniter>=0.3.17, <0.4',