diff --git a/debian/control b/debian/control
index a116efc0b..af119b24f 100644
--- a/debian/control
+++ b/debian/control
@@ -27,7 +27,7 @@ Package: python3-faucet
 Architecture: all
 Depends: python3-networkx (>= 1.9),
          python3-pbr (>= 1.9),
-         python3-prometheus-client (>= 0.20.0), python3-prometheus-client (<< 0.20.1),
+         python3-prometheus-client (>= 0.21.0), python3-prometheus-client (<< 0.21.1),
          python3-ruamel.yaml (>= 0.18.6), python3-ruamel.yaml (<< 0.18.7),
          python3-os-ken (>= 2.9.0), python3-os-ken (<< 2.9.1),
          python3-beka (>= 0.4.2), python3-beka (<< 0.4.3),
diff --git a/requirements.txt b/requirements.txt
index 1b06d7c18..20d58afc2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ chewie==0.0.25
 eventlet>=0.34.3; python_version >= "3.12"
 networkx>=1.9
 pbr>=1.9
-prometheus_client==0.20.0
+prometheus_client==0.21.0
 ruamel.yaml==0.18.6
 os_ken==2.9.0
 beka==0.4.2