diff --git a/Cargo.lock b/Cargo.lock
index ce393141..508c21d7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -625,12 +625,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "once_cell"
-version = "1.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7709cef83f0c1f58f666e746a08b21e0085f7440fa6a29cc194d68aac97a4225"
-
 [[package]]
 name = "opaque-debug"
 version = "0.3.0"
@@ -1041,16 +1035,16 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.19.2"
+version = "1.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c51a52ed6686dd62c320f9b89299e9dfb46f730c7a48e635c19f21d116cb1439"
+checksum = "664cf6576f16c0ad68184998f3c2d4be9903ede6b291a5b5cfc97d29e0057283"
 dependencies = [
+ "autocfg",
  "bytes",
  "libc",
  "memchr",
  "mio",
  "num_cpus",
- "once_cell",
  "pin-project-lite",
  "socket2",
  "tokio-macros",
diff --git a/Cargo.toml b/Cargo.toml
index 8e2f80d6..0aed9d46 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,5 +27,5 @@ slog = "2.7.0"
 indexmap = "1.8.0"
 
 [dev-dependencies]
-tokio = { version = "1.14.0", features = ["macros"] }
+tokio = { version = "1.20.3", features = ["macros"] }
 regex = "1"