diff --git a/audit_ai_service.py b/audit_ai_service.py
index e45993b..fe435c0 100644
--- a/audit_ai_service.py
+++ b/audit_ai_service.py
@@ -597,6 +597,11 @@ def generate_analysis(company_id: int, audit_type: str, user_id: int = None, for
 
             if cache:
                 logger.info(f"Cache check: stored_hash={cache.audit_data_hash[:12]}... current_hash={data_hash[:12]}... match={cache.audit_data_hash == data_hash} expires={cache.expires_at}")
+                if cache.audit_data_hash != data_hash:
+                    # Debug: find which fields changed
+                    for k, v in sorted(hash_data.items()):
+                        field_hash = hashlib.sha256(json.dumps({k: v}, default=str).encode()).hexdigest()[:8]
+                        logger.info(f"  field_hash: {k}={field_hash} type={type(v).__name__} val={str(v)[:80]}")
 
             if cache and cache.audit_data_hash == data_hash and cache.expires_at and cache.expires_at > datetime.now():
                 logger.info(f"AI analysis cache hit for company {company_id} audit_type={audit_type}")