diff --git a/Cargo.lock b/Cargo.lock
index c4b98039749..227a439a6b1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1659,7 +1659,7 @@ dependencies = [
  "indexmap",
  "log",
  "slab",
- "tokio 0.2.19",
+ "tokio 0.2.20",
  "tokio-util",
 ]
 
@@ -1860,7 +1860,7 @@ dependencies = [
  "net2",
  "pin-project",
  "time",
- "tokio 0.2.19",
+ "tokio 0.2.20",
  "tower-service",
  "want 0.3.0",
 ]
@@ -1878,7 +1878,7 @@ dependencies = [
  "log",
  "rustls",
  "rustls-native-certs",
- "tokio 0.2.19",
+ "tokio 0.2.20",
  "tokio-rustls",
  "webpki",
 ]
@@ -2941,7 +2941,7 @@ dependencies = [
  "sp-transaction-pool",
  "structopt",
  "substrate-build-script-utils",
- "tokio 0.2.19",
+ "tokio 0.2.20",
  "trie-root",
  "vergen",
 ]
@@ -4606,7 +4606,7 @@ dependencies = [
  "structopt",
  "substrate-prometheus-endpoint",
  "time",
- "tokio 0.2.19",
+ "tokio 0.2.20",
 ]
 
 [[package]]
@@ -6306,7 +6306,7 @@ dependencies = [
  "hyper 0.13.4",
  "log",
  "prometheus",
- "tokio 0.2.19",
+ "tokio 0.2.20",
 ]
 
 [[package]]
@@ -6609,9 +6609,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "0.2.19"
+version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d9c43f1bb96970e153bcbae39a65e249ccb942bd9d36dbdf086024920417c9c"
+checksum = "05c1d570eb1a36f0345a5ce9c6c6e665b70b73d11236912c0b477616aeec47b1"
 dependencies = [
  "bytes 0.5.4",
  "fnv",
@@ -6731,7 +6731,7 @@ checksum = "4adb8b3e5f86b707f1b54e7c15b6de52617a823608ccda98a15d3a24222f265a"
 dependencies = [
  "futures-core",
  "rustls",
- "tokio 0.2.19",
+ "tokio 0.2.20",
  "webpki",
 ]
 
@@ -6843,7 +6843,7 @@ dependencies = [
  "futures-sink",
  "log",
  "pin-project-lite",
- "tokio 0.2.19",
+ "tokio 0.2.20",
 ]
 
 [[package]]