diff --git a/.github/workflows/lint-python.yaml b/.github/workflows/lint-python.yaml
index e2673879..c2caf9e5 100644
--- a/.github/workflows/lint-python.yaml
+++ b/.github/workflows/lint-python.yaml
@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - main
+      - staging
   pull_request:
     branches:
       - main
+      - staging
 
 jobs:
   flake8-lint:
diff --git a/tests/markets/conftest.py b/tests/markets/conftest.py
index 8caa4ae5..dce4f5a1 100644
--- a/tests/markets/conftest.py
+++ b/tests/markets/conftest.py
@@ -1,10 +1,8 @@
 import pytest
-import json
 from brownie import (
     Contract, OverlayV1Token, OverlayV1Market, OverlayV1Factory,
     OverlayV1FeedFactoryMock,
-    OverlayV1FeedMock, OverlayV1Deployer, web3, 
-    OverlayV1ChainlinkFeed, OverlayV1ChainlinkFeedFactory
+    OverlayV1FeedMock, OverlayV1Deployer, web3
 )
 
 
@@ -118,6 +116,7 @@ def feed_factory():
     # to be used as example - deployed OverlayV1ChainlinkFeedFactory
     yield Contract.from_explorer("0x92ee7A26Dbc18E9C0157831d79C2906A02fD1FAe")
 
+
 @pytest.fixture(scope="module")
 def feed():
     # to be used as example - deployed CS2 feed
diff --git a/tests/markets/test_oi_cap.py b/tests/markets/test_oi_cap.py
index bed5eeae..75bc735f 100644
--- a/tests/markets/test_oi_cap.py
+++ b/tests/markets/test_oi_cap.py
@@ -53,7 +53,7 @@ def test_cap_notional_adjusted_for_bounds(market, feed):
 
         # expect is the min of all cap quantities
         expect = min(cap_notional, cap_notional_front_run_bound,
-                    cap_notional_back_run_bound)
+                     cap_notional_back_run_bound)
         actual = market.capNotionalAdjustedForBounds(data, cap_notional)
         assert actual == expect
 
diff --git a/tests/token/test_mint_burn.py b/tests/token/test_mint_burn.py
index 4d857ba6..c9ecbb97 100644
--- a/tests/token/test_mint_burn.py
+++ b/tests/token/test_mint_burn.py
@@ -2,13 +2,21 @@
 
 
 def test_only_minter_on_mint(token, alice, bob):
-    EXPECTED_ERROR_MSG = 'AccessControl: account 0x33a4622b82d4c04a53e170c638b944ce27cffce3 is missing role 0xf0887ba65ee2024ea881d91b74c2450ef19e1557f03bed3ea9f16b037cbe2dc9'
+    EXPECTED_ERROR_MSG = (
+        'AccessControl: account 0x33a4622b82d4c04a53e170c638b944ce27cffce3 '
+        'is missing role '
+        '0xf0887ba65ee2024ea881d91b74c2450ef19e1557f03bed3ea9f16b037cbe2dc9'
+    )
     with brownie.reverts(EXPECTED_ERROR_MSG):
         token.mint(bob, 1 * 10 ** token.decimals(), {"from": alice})
 
 
 def test_only_burner_on_burn(token, alice):
-    EXPECTED_ERROR_MSG = 'AccessControl: account 0x33a4622b82d4c04a53e170c638b944ce27cffce3 is missing role 0x9667e80708b6eeeb0053fa0cca44e028ff548e2a9f029edfeac87c118b08b7c8'
+    EXPECTED_ERROR_MSG = (
+        'AccessControl: account 0x33a4622b82d4c04a53e170c638b944ce27cffce3 '
+        'is missing role '
+        '0x9667e80708b6eeeb0053fa0cca44e028ff548e2a9f029edfeac87c118b08b7c8'
+    )
     with brownie.reverts(EXPECTED_ERROR_MSG):
         token.burn(1 * 10 ** token.decimals(), {"from": alice})