2 files changed, 2 insertions, 0 deletions
diff --git a/gn_auth/auth/authentication/oauth2/endpoints/introspection.py b/gn_auth/auth/authentication/oauth2/endpoints/introspection.py
index 572324e..200b25d 100644
--- a/gn_auth/auth/authentication/oauth2/endpoints/introspection.py
+++ b/gn_auth/auth/authentication/oauth2/endpoints/introspection.py
@@ -20,6 +20,7 @@ def get_token_user_sub(token: OAuth2Token) -> str:# pylint: disable=[unused-argu
 
 class IntrospectionEndpoint(_IntrospectionEndpoint):
     """Introspect token."""
+    CLIENT_AUTH_METHODS = ['client_secret_post']
     def query_token(self, token_string: str, token_type_hint: str):
         """Query the token."""
         return _query_token(self, token_string, token_type_hint)
diff --git a/gn_auth/auth/authentication/oauth2/endpoints/revocation.py b/gn_auth/auth/authentication/oauth2/endpoints/revocation.py
index 240ca30..80922f1 100644
--- a/gn_auth/auth/authentication/oauth2/endpoints/revocation.py
+++ b/gn_auth/auth/authentication/oauth2/endpoints/revocation.py
@@ -12,6 +12,7 @@ from .utilities import query_token as _query_token
 class RevocationEndpoint(_RevocationEndpoint):
     """Revoke the tokens"""
     ENDPOINT_NAME = "revoke"
+    CLIENT_AUTH_METHODS = ['client_secret_post']
     def query_token(self, token_string: str, token_type_hint: str):
         """Query the token."""
         return _query_token(self, token_string, token_type_hint)