diff --git a/cicada/lib/scheduler.py b/cicada/lib/scheduler.py
index 8721c18..47c7e55 100644
--- a/cicada/lib/scheduler.py
+++ b/cicada/lib/scheduler.py
@@ -153,7 +153,7 @@ def insert_schedule_details(db_cur, schedule_details):
     if schedule_details["schedule_description"] is not None:
         sqlquery = sqlquery + " ,'" + str(schedule_details["schedule_description"]) + "'"
     if schedule_details["server_id"] is None:
-        sqlquery = sqlquery + " ,(SELECT MIN(server_id) FROM servers WHERE is_enabled=1)"
+        sqlquery = sqlquery + " ,(SELECT MAX(server_id) FROM servers WHERE is_enabled=1)"
     else:
         sqlquery = sqlquery + " ," + str(schedule_details["server_id"])
     if schedule_details["schedule_order"] is not None:
diff --git a/pyproject.toml b/pyproject.toml
index 471948f..a8fb973 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,6 @@
 [build-system]
 requires = ["setuptools >= 20.0"]
 build-backend = "setuptools.build_meta"
+
+[tool.black]
+line-length = 120
diff --git a/setup.py b/setup.py
index e07a69e..8f6c72c 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 
 setup(
     name="cicada",
-    version="0.5.1",
+    version="0.6.0",
     description="Lightweight, agent-based, distributed scheduler",
     long_description=long_description,
     long_description_content_type="text/markdown",
@@ -20,19 +20,19 @@
     install_requires=[
         "psycopg2-binary==2.9.5",
         "pyyaml==6.0",
-        "croniter==1.3.8",
-        "tabulate==0.9.0",
-        "slack-sdk==3.19.5",
-        "backoff==2.2.1",
+        "croniter==1.3",
+        "tabulate==0.9",
+        "slack-sdk==3.19",
+        "backoff==2.2",
     ],
     extras_require={
         "dev": [
-            "pytest==7.2.0",
-            "pytest-cov==4.0.0",
-            "pytest-mock==3.10.0",
-            "black==22.12.0",
-            "flake8==6.0.0",
-            "freezegun==1.2.2",
+            "pytest==7.3",
+            "pytest-cov==4.0",
+            "pytest-mock==3.10",
+            "black==22.12",
+            "flake8==6.0",
+            "freezegun==1.2",
         ]
     },
     entry_points={"console_scripts": ["cicada=cicada.cli:main"]},
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_functional_main.py b/tests/test_functional_main.py
index a2f65c2..996d590 100644
--- a/tests/test_functional_main.py
+++ b/tests/test_functional_main.py
@@ -241,7 +241,9 @@ def test_exec_schedule():
     assert query_result >= 1
 
 
-def test_exec_schedule_send_alert_if_returncode_not_0_and_config_has_setting_for_all(mocker):  # noqa
+def test_exec_schedule_send_alert_if_returncode_not_0_and_config_has_setting_for_all(
+    mocker,
+):  # noqa
     """test sending alert if returncode is not 0, and config setting is *"""
 
     return_code = choice(list(range(-100, 0)) + list(range(1, 100)))
@@ -256,7 +258,7 @@ def test_exec_schedule_send_alert_if_returncode_not_0_and_config_has_setting_for
         slack:
              channel: foo_channel
              returncodes_alert: *
-        """
+        """,
     )
     with TemporaryDirectory() as temp_dir:
         for file_content in definitions_contents:
@@ -268,17 +270,21 @@ def test_exec_schedule_send_alert_if_returncode_not_0_and_config_has_setting_for
             mocked_slack.assert_called_once_with("FOO_SCHEDULE_ID", "FOO_LOG_ID", return_code, None, None)
 
 
-def test_exec_schedule_send_alert_if_returncode_not_0_and_exists_in_config(mocker):  # noqa
+def test_exec_schedule_send_alert_if_returncode_not_0_and_exists_in_config(
+    mocker,
+):  # noqa
     """test sending alert if returncode is not 0, and it is included in the config setting"""
     return_code = choice([1, 13, -15])
 
     mocked_slack = mocks_for_alert_test(return_code, mocker=mocker)
     with TemporaryDirectory() as temp_dir:
         with open(f"{temp_dir}/definitions.yml", "w", encoding="utf-8") as definitions_file:
-            definitions_file.write("""
+            definitions_file.write(
+                """
             slack:
                  channel: foo_channel
-                 returncodes_alert: [1, 13, -15]""")
+                 returncodes_alert: [1, 13, -15]"""
+            )
 
         mocker.patch("os.path.join", return_value=f"{temp_dir}/definitions.yml")
         exec_schedule.main("FOO_SCHEDULE_ID", "FOO_DB")
@@ -292,10 +298,12 @@ def test_exec_schedule_not_send_alert_if_returncode_0_but_not_in_config(mocker):
     mocked_slack = mocks_for_alert_test(return_code=return_code, mocker=mocker)
     with TemporaryDirectory() as temp_dir:
         with open(f"{temp_dir}/definitions.yml", "w", encoding="utf-8") as definitions_file:
-            definitions_file.write("""
+            definitions_file.write(
+                """
                 slack:
                      channel: foo_channel
-                     returncodes_alert: [13, -15]""")
+                     returncodes_alert: [13, -15]"""
+            )
 
         mocker.patch("os.path.join", return_value=f"{temp_dir}/definitions.yml")
         exec_schedule.main("FOO_SCHEDULE_ID", "FOO_DB")