diff --git a/Cargo.lock b/Cargo.lock
index 1ed06136646..d7352b6a3a8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -301,9 +301,9 @@ dependencies = [
 
 [[package]]
 name = "async-io"
-version = "2.3.1"
+version = "2.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f97ab0c5b00a7cdbe5a371b9a782ee7be1316095885c8a4ea1daf490eb0ef65"
+checksum = "0d6baa8f0178795da0e71bc42c9e5d13261aac7ee549853162e66a241ba17964"
 dependencies = [
  "async-lock 3.1.0",
  "cfg-if",
@@ -2288,7 +2288,7 @@ version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6b0422c86d7ce0e97169cc42e04ae643caf278874a7a3c87b8150a220dc7e1e"
 dependencies = [
- "async-io 2.3.1",
+ "async-io 2.3.3",
  "core-foundation",
  "fnv",
  "futures",
@@ -2888,7 +2888,7 @@ dependencies = [
 name = "libp2p-mdns"
 version = "0.45.1"
 dependencies = [
- "async-io 2.3.1",
+ "async-io 2.3.3",
  "async-std",
  "data-encoding",
  "futures",
@@ -3316,7 +3316,7 @@ dependencies = [
 name = "libp2p-tcp"
 version = "0.41.0"
 dependencies = [
- "async-io 2.3.1",
+ "async-io 2.3.3",
  "async-std",
  "futures",
  "futures-timer",
diff --git a/protocols/mdns/Cargo.toml b/protocols/mdns/Cargo.toml
index ef273781b78..9009ebee2ec 100644
--- a/protocols/mdns/Cargo.toml
+++ b/protocols/mdns/Cargo.toml
@@ -12,7 +12,7 @@ categories = ["network-programming", "asynchronous"]
 
 [dependencies]
 async-std  = { version = "1.12.0", optional = true }
-async-io  = { version = "2.3.1", optional = true }
+async-io  = { version = "2.3.3", optional = true }
 data-encoding = "2.5.0"
 futures = "0.3.30"
 if-watch = "3.2.0"
diff --git a/transports/tcp/Cargo.toml b/transports/tcp/Cargo.toml
index 515d47d2a5a..310d2373911 100644
--- a/transports/tcp/Cargo.toml
+++ b/transports/tcp/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["peer-to-peer", "libp2p", "networking"]
 categories = ["network-programming", "asynchronous"]
 
 [dependencies]
-async-io = { version = "2.3.1", optional = true }
+async-io = { version = "2.3.3", optional = true }
 futures = "0.3.30"
 futures-timer = "3.0"
 if-watch = "3.2.0"