diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a110e2ca..c329e8be 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,7 +21,7 @@ jobs:
         python-version: ["3.6", "3.7", "3.8", "3.9", "3.10"]
 
     steps:
-      - uses: "actions/checkout@v2"
+      - uses: "actions/checkout@v3"
       - uses: "actions/setup-python@v2"
         with:
           python-version: "${{ matrix.python-version }}"
@@ -61,7 +61,7 @@ jobs:
     runs-on: "ubuntu-latest"
 
     steps:
-      - uses: "actions/checkout@v2"
+      - uses: "actions/checkout@v3"
       - uses: "actions/setup-python@v2"
         with:
           python-version: "3.8"
@@ -87,7 +87,7 @@ jobs:
     runs-on: "${{ matrix.os }}"
 
     steps:
-      - uses: "actions/checkout@v2"
+      - uses: "actions/checkout@v3"
       - uses: "actions/setup-python@v2"
         with:
           python-version: "3.8"
diff --git a/jwt/utils.py b/jwt/utils.py
index 8ab73b42..b8ad5fa5 100644
--- a/jwt/utils.py
+++ b/jwt/utils.py
@@ -136,7 +136,7 @@ def is_pem_format(key: bytes) -> bool:
 
 # Based on https://github.com/pyca/cryptography/blob/bcb70852d577b3f490f015378c75cba74986297b/src/cryptography/hazmat/primitives/serialization/ssh.py#L40-L46
 _CERT_SUFFIX = b"-cert-v01@openssh.com"
-_SSH_PUBKEY_RC = re.compile(br"\A(\S+)[ \t]+(\S+)")
+_SSH_PUBKEY_RC = re.compile(rb"\A(\S+)[ \t]+(\S+)")
 _SSH_KEY_FORMATS = [
     b"ssh-ed25519",
     b"ssh-rsa",
diff --git a/tests/test_advisory.py b/tests/test_advisory.py
index a4a7d237..ed768d4b 100644
--- a/tests/test_advisory.py
+++ b/tests/test_advisory.py
@@ -1,14 +1,17 @@
-import jwt
 import pytest
+
+import jwt
 from jwt.exceptions import InvalidKeyError
 
 from .utils import crypto_required
 
-priv_key_bytes = b'''-----BEGIN PRIVATE KEY-----
+priv_key_bytes = b"""-----BEGIN PRIVATE KEY-----
 MC4CAQAwBQYDK2VwBCIEIIbBhdo2ah7X32i50GOzrCr4acZTe6BezUdRIixjTAdL
------END PRIVATE KEY-----'''
+-----END PRIVATE KEY-----"""
 
-pub_key_bytes = b'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPL1I9oiq+B8crkmuV4YViiUnhdLjCp3hvy1bNGuGfNL'
+pub_key_bytes = (
+    b"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPL1I9oiq+B8crkmuV4YViiUnhdLjCp3hvy1bNGuGfNL"
+)
 
 ssh_priv_key_bytes = b"""-----BEGIN EC PRIVATE KEY-----
 MHcCAQEEIOWc7RbaNswMtNtc+n6WZDlUblMr2FBPo79fcGXsJlGQoAoGCCqGSM49
@@ -41,11 +44,11 @@ def test_ghsa_ffqj_6fqr_9h24(self):
         # Making a good jwt token that should work by signing it
         # with the private key
         # encoded_good = jwt.encode({"test": 1234}, priv_key_bytes, algorithm="EdDSA")
-        encoded_good = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJFZERTQSJ9.eyJ0ZXN0IjoxMjM0fQ.M5y1EEavZkHSlj9i8yi9nXKKyPBSAUhDRTOYZi3zZY11tZItDaR3qwAye8pc74_lZY3Ogt9KPNFbVOSGnUBHDg'
+        encoded_good = "eyJ0eXAiOiJKV1QiLCJhbGciOiJFZERTQSJ9.eyJ0ZXN0IjoxMjM0fQ.M5y1EEavZkHSlj9i8yi9nXKKyPBSAUhDRTOYZi3zZY11tZItDaR3qwAye8pc74_lZY3Ogt9KPNFbVOSGnUBHDg"
 
         # Using HMAC with the public key to trick the receiver to think that the
         # public key is a HMAC secret
-        encoded_bad = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ0ZXN0IjoxMjM0fQ.6ulDpqSlbHmQ8bZXhZRLFko9SwcHrghCwh8d-exJEE4'
+        encoded_bad = "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ0ZXN0IjoxMjM0fQ.6ulDpqSlbHmQ8bZXhZRLFko9SwcHrghCwh8d-exJEE4"
 
         # Both of the jwt tokens are validated as valid
         jwt.decode(
@@ -101,12 +104,12 @@ def test_ghsa_ffqj_6fqr_9h24(self):
         jwt.decode(
             encoded_good,
             ssh_key_bytes,
-            algorithms=jwt.algorithms.get_default_algorithms()
+            algorithms=jwt.algorithms.get_default_algorithms(),
         )
 
         with pytest.raises(InvalidKeyError):
             jwt.decode(
                 encoded_bad,
                 ssh_key_bytes,
-                algorithms=jwt.algorithms.get_default_algorithms()
+                algorithms=jwt.algorithms.get_default_algorithms(),
             )