diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index 18b365f..550cda4 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -16,7 +16,23 @@ jobs:
         django-version: ["3.0", "3.1", "3.2", "4.0", "4.1"]
         clickhouse-version: ["latest"]
         redis-version: ["latest"]
-                      
+        exclude:
+        # Django 4.0+ doesn't support python 3.7
+        - python-version: "3.7"
+          django-version: "4.0"
+        - python-version: "3.7"
+          django-version: "4.1"
+
+        # Django 4.0+ doesn't support PostgreSQL 9.6
+        - django-version: "4.0"
+          postgres-version: "9.6"
+        - django-version: "4.1"
+          postgres-version: "9.6"
+
+        # Django 4.1+ doesn't support PostgreSQL 10
+        - django-version: "4.1"
+          postgres-version: "10"
+
     services:
       postgres:
         image: postgres:${{ matrix.postgres-version }}