diff --git a/mdproxy.py b/mdproxy.py
index 4d78f0af729c2a40c5e03f8255734fe5fabe82e4..a8f1e93e55167fc8e2223cc895e6219dfd864d5d 100755
--- a/mdproxy.py
+++ b/mdproxy.py
@@ -46,10 +46,12 @@ def serve_all(realm):
         request = requests.get(f"{config[realm]['signer']}/{realm}"
                                f"/entities")
         data = request.text
-        last_modified = request.headers.get('Last-Modified',
-                                            formatdate(timeval=None,
-                                                    localtime=False,
-                                                    usegmt=True))
+        last_modified = request.headers.get(
+            'Last-Modified',
+            formatdate(timeval=None,
+                       localtime=False,
+                       usegmt=True)
+            )
 
         try:
             root = ET.fromstring(data)
diff --git a/mdserver.py b/mdserver.py
index b40704d74b49402c23899817950eb9d04194d30c..f76b9d845a1c9e377c18a0e4cff4c2bb2574bd5a 100755
--- a/mdserver.py
+++ b/mdserver.py
@@ -30,8 +30,10 @@ def serve_all(realm):
                    datetime.now(tz.tzutc())).total_seconds())
 
     response.headers['Cache-Control'] = f"max-age={max_age}"
-    response.headers['Last-Modified'] = formatdate(timeval=mktime(data.last_modified.timetuple()),
-                                                   localtime=False, usegmt=True)
+    response.headers['Last-Modified'] = formatdate(
+        timeval=mktime(data.last_modified.timetuple()),
+        localtime=False,
+        usegmt=True)
     return response
 
 
@@ -57,8 +59,10 @@ def serve_one(realm, entity_id):
         last_modified = datetime.now(tz.tzutc())
 
     response.headers['Cache-Control'] = f"max-age={max_age}"
-    response.headers['Last-Modified'] = formatdate(timeval=mktime(last_modified.timetuple()),
-                                                   localtime=False, usegmt=True)
+    response.headers['Last-Modified'] = formatdate(
+        timeval=mktime(last_modified.timetuple()),
+        localtime=False,
+        usegmt=True)
     return response
 
 
diff --git a/utils.py b/utils.py
index 9fce5a5bfeb9cba620de671b2ee21297aaaedf8e..b523990f4bf863386234c71ec48941e458972199 100755
--- a/utils.py
+++ b/utils.py
@@ -192,10 +192,10 @@ class Realm:
             data = Entity()
             ns = NSMAP
             root = ET.Element(f"{{{MD_NAMESPACE}}}EntitiesDescriptor",
-                            nsmap=ns)
+                              nsmap=ns)
             # We are going to minimize expires, so set to some inf value
             valid_until = (datetime.now(tz.tzutc()) +
-                        timedelta(days=365))
+                           timedelta(days=365))
             cache_duration = parse_duration("P1D")
             for sha1, entity in self.idps.items():
                 valid_until = min(valid_until, entity.valid_until)