diff --git a/Cargo.lock b/Cargo.lock
index a5f9344..51c8d6e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -231,12 +231,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "once_cell"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
-
 [[package]]
 name = "pin-project-lite"
 version = "0.2.9"
@@ -326,16 +320,15 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.18.1"
+version = "1.18.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dce653fb475565de9f6fb0614b28bca8df2c430c0cf84bcd9c843f15de5414cc"
+checksum = "8bfb875c82dc0a4f1f37a30e720dee181a2b3a06a428b0fc6873ea38d6407850"
 dependencies = [
  "bytes",
  "libc",
  "memchr",
  "mio",
  "num_cpus",
- "once_cell",
  "pin-project-lite",
  "socket2",
  "tokio-macros",