diff --git a/Cargo.lock b/Cargo.lock
index 9d7a016..5f35cec 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2581,9 +2581,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.21.1"
+version = "1.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0020c875007ad96677dcc890298f4b942882c5d4eb7cc8f439fc3bf813dc9c95"
+checksum = "a9e03c497dc955702ba729190dc4aac6f2a0ce97f913e5b1b5912fc5039d9099"
 dependencies = [
  "autocfg",
  "bytes",
@@ -2591,7 +2591,6 @@ dependencies = [
  "memchr",
  "mio",
  "num_cpus",
- "once_cell",
  "pin-project-lite",
  "socket2",
  "tokio-macros",
diff --git a/crates/head/Cargo.toml b/crates/head/Cargo.toml
index f1f1a66..63ea924 100644
--- a/crates/head/Cargo.toml
+++ b/crates/head/Cargo.toml
@@ -63,5 +63,5 @@ features = ["Window", "Document", "EventListener"]
 
 [dev-dependencies]
 bytes = { version = "1.2.1", features = ["serde"] }
-tokio = { version = "1.21.1", features = ["macros", "rt"] }
+tokio = { version = "1.21.2", features = ["macros", "rt"] }
 wasm-bindgen-test = "0.3.33"