diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8f24edf..5dde50a 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -10,7 +10,7 @@ repos:
     -   id: check-added-large-files
     -   id: check-json
 -   repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.282
+    rev: v0.0.284
     hooks:
     -   id: ruff
         args: [--fix, --exit-non-zero-on-fix]
diff --git a/alicat/util.py b/alicat/util.py
index 340428f..f533d79 100644
--- a/alicat/util.py
+++ b/alicat/util.py
@@ -195,7 +195,7 @@ def __init__(self, address: str, baudrate: int=19200, timeout: float=.15,
         """Initialize serial port."""
         super().__init__(timeout)
         self.address = address
-        assert type(self.address) == str
+        assert isinstance(self.address, str)
         self.serial_details = {'baudrate': baudrate,
                                'bytesize': bytesize,
                                'stopbits': stopbits,
diff --git a/setup.py b/setup.py
index 6c75630..477f528 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
                 'pytest-cov>=4,<5',
                 'pytest-asyncio==0.*',
                 'pytest-xdist==3.*',
-                'ruff==0.0.282',
+                'ruff==0.0.284',
                 'mypy==1.5.0',
                 'types-pyserial',
             ],