diff --git a/Cargo.lock b/Cargo.lock
index 90ae9b2..3cff3f2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1444,17 +1444,17 @@ dependencies = [
 
 [[package]]
 name = "prometheus"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8425533e7122f0c3cc7a37e6244b16ad3a2cc32ae7ac6276e2a75da0d9c200d"
+checksum = "5986aa8d62380092d2f50f8b1cdba9cb9b6731ffd4b25b51fd126b6c3e05b99c"
 dependencies = [
  "cfg-if",
  "fnv",
  "lazy_static",
  "libc",
+ "memchr",
  "parking_lot",
  "procfs",
- "regex",
  "thiserror",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 63a99fd..f45dcf0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ kankyo = "0.3"
 lazy_static = "1.4"
 log = "0.4"
 mime = "0.3.0"
-prometheus = { version = "0.11", default-features = false, features = ["process"] }
+prometheus = { version = "0.12", default-features = false, features = ["process"] }
 rand = "0"
 reqwest = { version = "0.11", features = ["json"] }
 serde_dhall = "0.10.0"