diff --git a/app/auth.py b/app/auth.py
index 82d2014..bfda12a 100644
--- a/app/auth.py
+++ b/app/auth.py
@@ -31,6 +31,8 @@
 
 def _decode_token(token: str):
     try:
+        logger.debug(f"Decoding token for user authentication: {token} with "
+                     f"issuer {KEYCLOAK_BASE_URL}")
         signing_key = jwks_client.get_signing_key_from_jwt(token).key
         payload = jwt.decode(
             token,