diff --git a/backend/app/auth.py b/backend/app/auth.py
index 272009e..685a4e2 100644
--- a/backend/app/auth.py
+++ b/backend/app/auth.py
@@ -149,6 +149,9 @@ async def validate_token(credentials: HTTPAuthorizationCredentials = Security(se
         logger.debug("Introspection succeeded; claims=%s", verified)
 
     try:
-        return TokenClaims(**verified)
+        token_claims = TokenClaims(**verified)
+        logger.debug("Token claims parsed successfully: %s", token_claims.model_dump())
+        return token_claims
     except Exception as exc:
+        logger.error("Unable to parse token claims: %s; verified=%s", exc, verified)
         raise HTTPException(status_code=401, detail="Unable to parse token claims") from exc