diff --git a/Cargo.lock b/Cargo.lock
index 6480223..5966bfa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1566,17 +1566,6 @@ version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "20448fd678ec04e6ea15bbe0476874af65e98a01515d667aa49f1434dc44ebf4"
 
-[[package]]
-name = "parking_lot"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
-dependencies = [
- "instant",
- "lock_api",
- "parking_lot_core 0.8.5",
-]
-
 [[package]]
 name = "parking_lot"
 version = "0.12.0"
@@ -1584,21 +1573,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "87f5ec2493a61ac0506c0f4199f99070cbe83857b0337006a30f3e6719b8ef58"
 dependencies = [
  "lock_api",
- "parking_lot_core 0.9.1",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d76e8e1493bcac0d2766c42737f34458f1c8c50c0d23bcb24ea953affb273216"
-dependencies = [
- "cfg-if",
- "instant",
- "libc",
- "redox_syscall",
- "smallvec",
- "winapi",
+ "parking_lot_core",
 ]
 
 [[package]]
@@ -1869,13 +1844,12 @@ dependencies = [
 
 [[package]]
 name = "procfs"
-version = "0.10.1"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95e344cafeaeefe487300c361654bcfc85db3ac53619eeccced29f5ea18c4c70"
+checksum = "0941606b9934e2d98a3677759a971756eb821f75764d0e0d26946d08e74d9104"
 dependencies = [
  "bitflags",
  "byteorder",
- "flate2",
  "hex",
  "lazy_static",
  "libc",
@@ -1883,16 +1857,16 @@ dependencies = [
 
 [[package]]
 name = "prometheus"
-version = "0.13.0"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7f64969ffd5dd8f39bd57a68ac53c163a095ed9d0fb707146da1b27025a3504"
+checksum = "cface98dfa6d645ea4c789839f176e4b072265d085bfcc48eaa8d137f58d3c39"
 dependencies = [
  "cfg-if",
  "fnv",
  "lazy_static",
  "libc",
  "memchr",
- "parking_lot 0.11.2",
+ "parking_lot",
  "procfs",
  "thiserror",
 ]
@@ -2545,7 +2519,7 @@ dependencies = [
  "mio",
  "num_cpus",
  "once_cell",
- "parking_lot 0.12.0",
+ "parking_lot",
  "pin-project-lite",
  "signal-hook-registry",
  "socket2",