diff --git a/requirements-dev.txt b/requirements-dev.txt
index 80726a4..991e65b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -131,7 +131,7 @@ platformdirs==3.11.0
     # via black
 pluggy==1.5.0
     # via pytest
-prometheus-client==0.17.1
+prometheus-client==0.20.0
     # via
     #   -r requirements.txt
     #   prometheus-flask-exporter
diff --git a/requirements.txt b/requirements.txt
index 80c1050..1b83b7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ packaging==23.2
     # via limits
 paho-mqtt==1.6.1
     # via flask-mqtt
-prometheus-client==0.17.1
+prometheus-client==0.20.0
     # via prometheus-flask-exporter
 prometheus-flask-exporter==0.23.0
     # via -r requirements.in