diff --git a/airbyte_cdk/test/models/scenario.py b/airbyte_cdk/test/models/scenario.py
index 2704f6e96..ddd99ef74 100644
--- a/airbyte_cdk/test/models/scenario.py
+++ b/airbyte_cdk/test/models/scenario.py
@@ -143,9 +143,10 @@ def with_temp_config_file(
         ) as temp_file:
             temp_file.write(json.dumps(config))
             temp_file.flush()
-            # Allow the file to be read by other processes
+            # Allow the file to be read and written by other processes
+            # Write access is needed for connectors with config migration (e.g., OAuth token refresh)
             temp_path = Path(temp_file.name)
-            temp_path.chmod(temp_path.stat().st_mode | 0o444)
+            temp_path.chmod(temp_path.stat().st_mode | 0o666)
             yield temp_path
 
         # attempt cleanup, ignore errors
diff --git a/airbyte_cdk/test/standard_tests/docker_base.py b/airbyte_cdk/test/standard_tests/docker_base.py
index bc26802dd..e3e196ce1 100644
--- a/airbyte_cdk/test/standard_tests/docker_base.py
+++ b/airbyte_cdk/test/standard_tests/docker_base.py
@@ -243,7 +243,7 @@ def test_docker_image_build_and_check(
                     "run",
                     "--rm",
                     "-v",
-                    f"{temp_config_file}:{container_config_path}",
+                    f"{temp_config_file}:{container_config_path}:rw",
                     connector_image,
                     "check",
                     "--config",
@@ -336,7 +336,7 @@ def test_docker_image_build_and_read(
                     "run",
                     "--rm",
                     "-v",
-                    f"{temp_config_file}:{container_config_path}",
+                    f"{temp_config_file}:{container_config_path}:rw",
                     connector_image,
                     "discover",
                     "--config",
@@ -393,7 +393,7 @@ def test_docker_image_build_and_read(
                     "run",
                     "--rm",
                     "-v",
-                    f"{temp_config_file}:{container_config_path}",
+                    f"{temp_config_file}:{container_config_path}:rw",
                     "-v",
                     f"{configured_catalog_path}:{container_catalog_path}",
                     connector_image,