diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 2faf9a7..f0b51b6 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"
-      
+
       - name: Install build dependencies
         run: pip install -r docs/requirements.txt
       - name: Rendering HTML documentation
diff --git a/docs/advanced.rst b/docs/advanced.rst
index 65b3d4b..118570f 100644
--- a/docs/advanced.rst
+++ b/docs/advanced.rst
@@ -16,7 +16,7 @@ a nice addition. Here's an example:
     with vcr.use_cassette('fixtures/vcr_cassettes/synopsis.yaml') as cass:
         response = urllib2.urlopen('http://www.zombo.com/').read()
         # cass should have 1 request inside it
-        assert len(cass) == 1 
+        assert len(cass) == 1
         # the request uri should have been http://www.zombo.com/
         assert cass.requests[0].uri == 'http://www.zombo.com/'
 
@@ -208,7 +208,7 @@ So these two calls are the same:
 
     # original (still works)
     vcr = VCR(filter_headers=['authorization'])
-    
+
     # new
     vcr = VCR(filter_headers=[('authorization', None)])
 
@@ -218,7 +218,7 @@ Here are two examples of the new functionality:
 
     # replace with a static value (most common)
     vcr = VCR(filter_headers=[('authorization', 'XXXXXX')])
-    
+
     # replace with a callable, for example when testing
     # lots of different kinds of authorization.
     def replace_auth(key, value, request):
@@ -286,7 +286,7 @@ sensitive data from the response body:
         before_record_response=scrub_string(settings.USERNAME, 'username'),
     )
     with my_vcr.use_cassette('test.yml'):
-         # your http code here    
+         # your http code here
 
 
 Decode compressed response
diff --git a/runtests.sh b/runtests.sh
index f219725..9e40a2d 100755
--- a/runtests.sh
+++ b/runtests.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # https://blog.ionelmc.ro/2015/04/14/tox-tricks-and-patterns/#when-it-inevitably-leads-to-shell-scripts
-# If you are getting an INVOCATION ERROR for this script then there is 
+# If you are getting an INVOCATION ERROR for this script then there is
 # a good chance you are running on Windows.
 # You can and should use WSL for running tox on Windows when it calls bash scripts.
 REQUESTS_CA_BUNDLE=`python3 -m pytest_httpbin.certs` exec pytest "$@"
diff --git a/tests/fixtures/migration/new_cassette.json b/tests/fixtures/migration/new_cassette.json
index 5526989..822fa2a 100644
--- a/tests/fixtures/migration/new_cassette.json
+++ b/tests/fixtures/migration/new_cassette.json
@@ -15,9 +15,9 @@
             },
             "response": {
                 "status": {
-                    "message": "OK", 
+                    "message": "OK",
                     "code": 200
-                }, 
+                },
                 "headers": {
                     "access-control-allow-origin": ["*"],
                     "content-type": ["application/json"],
@@ -25,7 +25,7 @@
                     "server": ["gunicorn/0.17.4"],
                     "content-length": ["32"],
                     "connection": ["keep-alive"]
-                }, 
+                },
                 "body": {
                     "string": "{\n  \"origin\": \"217.122.164.194\"\n}"
                 }
diff --git a/tests/fixtures/migration/new_cassette.yaml b/tests/fixtures/migration/new_cassette.yaml
index e319dc8..b30652f 100644
--- a/tests/fixtures/migration/new_cassette.yaml
+++ b/tests/fixtures/migration/new_cassette.yaml
@@ -2,7 +2,7 @@ version: 1
 interactions:
 - request:
     body: null
-    headers: 
+    headers:
       accept: ['*/*']
       accept-encoding: ['gzip, deflate, compress']
       user-agent: ['python-requests/2.2.1 CPython/2.6.1 Darwin/10.8.0']
diff --git a/tests/fixtures/migration/old_cassette.json b/tests/fixtures/migration/old_cassette.json
index f6bfed1..7c4ff68 100644
--- a/tests/fixtures/migration/old_cassette.json
+++ b/tests/fixtures/migration/old_cassette.json
@@ -1,31 +1,31 @@
 [
     {
         "request": {
-            "body": null, 
-            "protocol": "http", 
-            "method": "GET", 
+            "body": null,
+            "protocol": "http",
+            "method": "GET",
             "headers": {
-                "accept-encoding": "gzip, deflate, compress", 
-                "accept": "*/*", 
+                "accept-encoding": "gzip, deflate, compress",
+                "accept": "*/*",
                 "user-agent": "python-requests/2.2.1 CPython/2.6.1 Darwin/10.8.0"
-            }, 
-            "host": "httpbin.org", 
-            "path": "/ip", 
+            },
+            "host": "httpbin.org",
+            "path": "/ip",
             "port": 80
-        }, 
+        },
         "response": {
             "status": {
-                "message": "OK", 
+                "message": "OK",
                 "code": 200
-            }, 
+            },
             "headers": [
-                "access-control-allow-origin: *\r\n", 
-                "content-type: application/json\r\n", 
-                "date: Mon, 21 Apr 2014 23:13:40 GMT\r\n", 
-                "server: gunicorn/0.17.4\r\n", 
-                "content-length: 32\r\n", 
+                "access-control-allow-origin: *\r\n",
+                "content-type: application/json\r\n",
+                "date: Mon, 21 Apr 2014 23:13:40 GMT\r\n",
+                "server: gunicorn/0.17.4\r\n",
+                "content-length: 32\r\n",
                 "connection: keep-alive\r\n"
-            ], 
+            ],
             "body": {
                 "string": "{\n  \"origin\": \"217.122.164.194\"\n}"
             }
diff --git a/tests/fixtures/wild/domain_redirect.yaml b/tests/fixtures/wild/domain_redirect.yaml
index 618babc..5df9210 100644
--- a/tests/fixtures/wild/domain_redirect.yaml
+++ b/tests/fixtures/wild/domain_redirect.yaml
@@ -10,7 +10,7 @@ interactions:
     uri: http://seomoz.org/
   response:
     body: {string: ''}
-    headers: 
+    headers:
       Location: ['http://moz.com/']
       Server: ['BigIP']
       Connection: ['Keep-Alive']