diff --git a/aurora/models/change.py b/aurora/models/change.py
index f5e5f64..00358f9 100644
--- a/aurora/models/change.py
+++ b/aurora/models/change.py
@@ -39,7 +39,7 @@ class Change(AuroraBaseModel):
             ('duration', self.duration),
             ('end_timestamp', self.end_timestamp),
         ]
-        joined = ' '.join('%s=%r' % t for t in attrs)
+        joined = ' '.join(f'{key}={value!r}' for key, value in attrs)
         return f"<{self.__class__.__name__} {joined}>"
 
     async def get_user(self) -> "PartialUser":
diff --git a/aurora/models/moderation.py b/aurora/models/moderation.py
index 616c426..9153e24 100644
--- a/aurora/models/moderation.py
+++ b/aurora/models/moderation.py
@@ -142,7 +142,7 @@ class Moderation(AuroraGuildModel):
             ('changes', self.changes),
             ('metadata', self.metadata),
         ]
-        joined = ' '.join('%s=%r' % t for t in attrs)
+        joined = ' '.join(f'{key}={value!r}' for key, value in attrs)
         return f"<{self.__class__.__name__} {joined}>"
 
     async def resolve(self, resolved_by: int, reason: str) -> Tuple[bool, str]:
diff --git a/aurora/models/type.py b/aurora/models/type.py
index ba806a5..60a4815 100644
--- a/aurora/models/type.py
+++ b/aurora/models/type.py
@@ -48,7 +48,7 @@ class Type(metaclass=AutoRegister(type_registry)):
             ('key', self.key),
             ('channel', self.channel),
         ]
-        joined = ' '.join('%s=%r' % t for t in attrs)
+        joined = ' '.join(f'{key}={value!r}' for key, value in attrs)
         return f"<{self.__class__.__name__} {joined}>"
 
     @classmethod