diff --git a/Cargo.lock b/Cargo.lock
index 91013b8..97f123c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -256,14 +256,15 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "0.8.0"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba272f85fa0b41fc91872be579b3bbe0f56b792aa361a380eb669469f68dafb2"
+checksum = "52da4364ffb0e4fe33a9841a98a3f3014fb964045ce4f7a45a398243c8d6b0c9"
 dependencies = [
  "libc",
  "log",
  "miow",
  "ntapi",
+ "wasi",
  "winapi",
 ]
 
@@ -516,15 +517,16 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.17.0"
+version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2af73ac49756f3f7c01172e34a23e5d0216f6c32333757c2c61feb2bbff5a5ee"
+checksum = "0f48b6d60512a392e34dbf7fd456249fd2de3c83669ab642e021903f4015185b"
 dependencies = [
  "bytes",
  "libc",
  "memchr",
  "mio",
  "num_cpus",
+ "once_cell",
  "pin-project-lite",
  "socket2",
  "tokio-macros",
@@ -624,6 +626,12 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
+[[package]]
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.79"
diff --git a/Cargo.toml b/Cargo.toml
index 3f736be..1fe5e98 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ percent-encoding = "2.1"
 rcgen = { version = "0.9.2" }
 rustls = "0.20.4"
 tokio-rustls = "0.23.3"
-tokio = { version = "1.17", features = ["fs", "io-util", "net", "rt-multi-thread", "sync"] }
+tokio = { version = "1.18", features = ["fs", "io-util", "net", "rt-multi-thread", "sync"] }
 url = "2.2.2"
 webpki = "0.22.0"