diff --git a/poetry.lock b/poetry.lock
index 324d685..b6e5eff 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -414,7 +414,7 @@ testing = ["pytest", "pytest-benchmark"]
 
 [[package]]
 name = "prometheus-client"
-version = "0.11.0"
+version = "0.12.0"
 description = "Python client for the Prometheus monitoring system."
 category = "main"
 optional = false
@@ -716,7 +716,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7.0"
-content-hash = "34311cb50acacb083c1a4fa4646385803e503b202a93cd9c068891b0cf0380b2"
+content-hash = "4bb098cf8c6938546f8bff48c5e4a005c5bb1bf1c17a7bd19aec40fcaef65018"
 
 [metadata.files]
 anyconfig = [
@@ -886,8 +886,8 @@ pluggy = [
     {file = "pluggy-1.0.0.tar.gz", hash = "sha256:4224373bacce55f955a878bf9cfa763c1e360858e330072059e10bad68531159"},
 ]
 prometheus-client = [
-    {file = "prometheus_client-0.11.0-py2.py3-none-any.whl", hash = "sha256:b014bc76815eb1399da8ce5fc84b7717a3e63652b0c0f8804092c9363acab1b2"},
-    {file = "prometheus_client-0.11.0.tar.gz", hash = "sha256:3a8baade6cb80bcfe43297e33e7623f3118d660d41387593758e2fb1ea173a86"},
+    {file = "prometheus_client-0.12.0-py2.py3-none-any.whl", hash = "sha256:317453ebabff0a1b02df7f708efbab21e3489e7072b61cb6957230dd004a0af0"},
+    {file = "prometheus_client-0.12.0.tar.gz", hash = "sha256:1b12ba48cee33b9b0b9de64a1047cbd3c5f2d0ab6ebcead7ddda613a750ec3c5"},
 ]
 proxmoxer = [
     {file = "proxmoxer-1.2.0.tar.gz", hash = "sha256:d1261c1cefd4d4faa6c654922c8db72cfee51e811e5ede4eb38a48cc62dac80e"},
diff --git a/pyproject.toml b/pyproject.toml
index 9fd6af1..ff55fee 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ colorama = "0.4.4"
 environs = "9.3.4"
 jsonschema = "4.1.2"
 nested-lookup = "0.2.22"
-prometheus-client = "0.11.0"
+prometheus-client = "0.12.0"
 proxmoxer = "1.2.0"
 python = "^3.7.0"
 python-json-logger = "2.0.2"