diff --git a/requirements.txt b/requirements.txt
index 8286d40..c636300 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ starlette==1.7.0
 streamlit==1.49.1
 
 # --- Monitoring ---
-prometheus-client==0.20.0
+prometheus-client==0.26.0
 opentelemetry-api==1.24.0
 opentelemetry-sdk==1.24.0
 opentelemetry-instrumentation-fastapi==0.45b0