diff --git a/docs/en/docs/release-notes.md b/docs/en/docs/release-notes.md
index 791f8fe1..d184fd95 100644
--- a/docs/en/docs/release-notes.md
+++ b/docs/en/docs/release-notes.md
@@ -11,6 +11,11 @@ hide:
 
 - Allow passing extensions as string.
 
+### Fixed
+
+- OpenAPI responses.
+- Enum definitions.
+
 ## 3.6.0
 
 ### Added
diff --git a/esmerald/enums.py b/esmerald/enums.py
index b6bc20d7..2c8d1d89 100644
--- a/esmerald/enums.py
+++ b/esmerald/enums.py
@@ -9,7 +9,7 @@ def __repr__(self) -> str:
         return str(self)
 
 
-class HttpMethod(StrEnum, Enum):
+class HttpMethod(StrEnum):
     GET = "GET"
     POST = "POST"
     PUT = "PUT"
@@ -20,7 +20,7 @@ class HttpMethod(StrEnum, Enum):
     TRACE = "TRACE"
 
 
-class MediaType(StrEnum, Enum):
+class MediaType(StrEnum):
     JSON = "application/json"
     HTML = "text/html"
     TEXT = "text/plain"
@@ -30,23 +30,23 @@ class MediaType(StrEnum, Enum):
     OCTET = "application/octet-stream"
 
 
-class OpenAPIMediaType(StrEnum, Enum):
+class OpenAPIMediaType(StrEnum):
     OPENAPI_YAML = "application/vnd.oai.openapi"
     OPENAPI_JSON = "application/vnd.oai.openapi+json"
 
 
-class EncodingType(StrEnum, Enum):
+class EncodingType(StrEnum):
     JSON = "application/json"
     MULTI_PART = "multipart/form-data"
     URL_ENCODED = "application/x-www-form-urlencoded"
 
 
-class ScopeType(StrEnum, Enum):
+class ScopeType(StrEnum):
     HTTP = "http"
     WEBSOCKET = "websocket"
 
 
-class ParamType(StrEnum, Enum):
+class ParamType(StrEnum):
     PATH = "path"
     QUERY = "query"
     COOKIE = "cookie"