diff --git a/Cargo.lock b/Cargo.lock
index f854a3a60944..9aa80aaea2d1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4448,9 +4448,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-util"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ebb7cb2f00c5ae8df755b252306272cd1790d39728363936e01827e11f0b017b"
+checksum = "ec31e5cc6b46e653cf57762f36f71d5e6386391d88a72fd6db4508f8f676fb29"
 dependencies = [
  "bytes",
  "futures-core",
diff --git a/src/dataflow/Cargo.toml b/src/dataflow/Cargo.toml
index 2722a681ad9f..7603095de340 100644
--- a/src/dataflow/Cargo.toml
+++ b/src/dataflow/Cargo.toml
@@ -45,6 +45,6 @@ serde = { version = "1.0.124", features = ["derive"] }
 serde_json = "1.0.64"
 timely = { git = "https://github.com/TimelyDataflow/timely-dataflow", default-features = false, features = ["bincode"] }
 tokio = { version = "1.3.0", features = ["fs", "rt"] }
-tokio-util = { version = "0.6.3", features = ["codec"] }
+tokio-util = { version = "0.6.4", features = ["codec"] }
 url = { version = "2.2.1", features = ["serde"] }
 uuid = { version = "0.8.2", features = ["serde", "v4"] }
diff --git a/src/pgwire/Cargo.toml b/src/pgwire/Cargo.toml
index dada27ca56b8..2e6444f8e903 100644
--- a/src/pgwire/Cargo.toml
+++ b/src/pgwire/Cargo.toml
@@ -29,4 +29,4 @@ sql = { path = "../sql" }
 tokio = "1.3.0"
 tokio-openssl = "0.6.1"
 tokio-stream = "0.1.3"
-tokio-util = { version = "0.6.3", features = ["codec"] }
+tokio-util = { version = "0.6.4", features = ["codec"] }