diff --git a/Cargo.toml b/Cargo.toml
index 5920875..105f433 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,7 +41,7 @@ toml = "0.5.8"
 
 [dependencies.prometheus]
 optional = true
-version = "0.12.0"
+version = "0.13.0"
 default_features = false
 features = ["process"]