diff --git a/api/s41_pipe_risk_probability.py b/api/s41_pipe_risk_probability.py
index 90dbcf2..23c30b6 100644
--- a/api/s41_pipe_risk_probability.py
+++ b/api/s41_pipe_risk_probability.py
@@ -1,5 +1,6 @@
 from .database import *
 from .s0_base import *
+import json
 
 def get_pipe_risk_probability_now(name: str, pipe_id: str) -> dict[str, Any]:
     t = try_read(name, f"select * from pipe_risk_probability where pipeid = '{pipe_id}'")