diff --git a/requirements.txt b/requirements.txt
index 0f72aa9..8724b3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ packaging==24.0
 pandas==2.2.2
 pillow==10.3.0
 prometheus-api-client==0.5.5
-prometheus-client==0.20.0
+prometheus-client==0.21.0
 pydantic==1.10.18
 pydantic-yaml==0.11.2
 pyparsing==3.1.2