diff --git a/apps/gooyal_oauth2/validators.py b/apps/gooyal_oauth2/validators.py
index f0186dc..1914361 100755
--- a/apps/gooyal_oauth2/validators.py
+++ b/apps/gooyal_oauth2/validators.py
@@ -50,3 +50,27 @@ class OAuth2Validator(BaseOAuth2Validator):  # pylint: disable=w0223
             return True
 
         return False
+
+    def get_additional_claims(self, request):
+        return {
+            "given_name": request.user.first_name,
+            "family_name": request.user.last_name,
+            "name": ' '.join([request.user.first_name, request.user.last_name]),
+            "preferred_username": request.user.username,
+            "email": request.user.email,
+        }
+
+    def get_claim_dict(self, request):
+        if self._get_additional_claims_is_request_agnostic():
+            claims = {"sub": lambda r: str(r.user.pk)}
+        else:
+            claims = {"sub": str(request.user.pk)}
+
+        # https://openid.net/specs/openid-connect-core-1_0.html#StandardClaims
+        if self._get_additional_claims_is_request_agnostic():
+            add = self.get_additional_claims()
+        else:
+            add = self.get_additional_claims(request)
+        claims.update(add)
+
+        return claims