diff --git a/example/demo/go.mod b/example/demo/go.mod
index 4a6714b..320582f 100644
--- a/example/demo/go.mod
+++ b/example/demo/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/cortexproject/promqlsmith v0.0.0-00010101000000-000000000000
 	github.com/efficientgo/core v1.0.0-rc.2
 	github.com/go-kit/log v0.2.1
-	github.com/prometheus/client_golang v1.18.0
+	github.com/prometheus/client_golang v1.19.0
 	github.com/prometheus/common v0.48.0
 	github.com/prometheus/prometheus v0.50.0
 	golang.org/x/exp v0.0.0-20240119083558-1b970713d09a
diff --git a/example/demo/go.sum b/example/demo/go.sum
index a429f3f..60f336f 100644
--- a/example/demo/go.sum
+++ b/example/demo/go.sum
@@ -49,8 +49,8 @@ github.com/oklog/ulid v1.3.1 h1:EGfNDEx6MqHz8B3uNV6QAib1UR2Lm97sHi3ocA6ESJ4=
 github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
-github.com/prometheus/client_golang v1.18.0 h1:HzFfmkOzH5Q8L8G+kSJKUx5dtG87sewO+FoDDqP5Tbk=
-github.com/prometheus/client_golang v1.18.0/go.mod h1:T+GXkCk5wSJyOqMIzVgvvjFDlkOQntgjkJWKrN5txjA=
+github.com/prometheus/client_golang v1.19.0 h1:ygXvpU1AoN1MhdzckN+PyD9QJOSD4x7kmXYlnfbA6JU=
+github.com/prometheus/client_golang v1.19.0/go.mod h1:ZRM9uEAypZakd+q/x7+gmsvXdURP+DABIEIjnmDdp+k=
 github.com/prometheus/client_model v0.5.0 h1:VQw1hfvPvk3Uv6Qf29VrPF32JB6rtbgI6cYPYQjL0Qw=
 github.com/prometheus/client_model v0.5.0/go.mod h1:dTiFglRmd66nLR9Pv9f0mZi7B7fk5Pm3gvsjB5tr+kI=
 github.com/prometheus/common v0.48.0 h1:QO8U2CdOzSn1BBsmXJXduaaW+dY/5QLjfB8svtSzKKE=