diff --git a/Cargo.lock b/Cargo.lock
index aa88eb2..05f29ad 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,45 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "addr2line"
-version = "0.20.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4fa78e18c64fce05e902adecd7a5eed15a5e0a3439f7b0e169f0252214865e3"
-dependencies = [
- "gimli",
-]
-
-[[package]]
-name = "adler"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
-
-[[package]]
-name = "backtrace"
-version = "0.3.68"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4319208da049c43661739c5fade2ba182f09d1dc2299b32298d3a31692b17e12"
-dependencies = [
- "addr2line",
- "cc",
- "cfg-if",
- "libc",
- "miniz_oxide",
- "object",
- "rustc-demangle",
-]
-
-[[package]]
-name = "cc"
-version = "1.0.82"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "305fe645edc1442a0fa8b6726ba61d422798d37a52e12eaecf4b022ebbb88f01"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -58,12 +19,6 @@ dependencies = [
  "wasi",
 ]
 
-[[package]]
-name = "gimli"
-version = "0.27.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6c80984affa11d98d1b88b66ac8853f143217b399d3c74116778ff8fdb4ed2e"
-
 [[package]]
 name = "half"
 version = "1.8.2"
@@ -82,36 +37,6 @@ version = "0.2.147"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4668fb0ea861c1df094127ac5f1da3409a82116a4ba74fca2e58ef927159bb3"
 
-[[package]]
-name = "memchr"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
-
-[[package]]
-name = "miniz_oxide"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7810e0be55b428ada41041c41f32c9f1a42817901b4ccf45fa3d4b6561e74c7"
-dependencies = [
- "adler",
-]
-
-[[package]]
-name = "object"
-version = "0.31.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bda667d9f2b5051b8833f59f3bf748b28ef54f850f4fcb389a252aa383866d1"
-dependencies = [
- "memchr",
-]
-
-[[package]]
-name = "pin-project-lite"
-version = "0.2.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12cc1b0bf1727a77a54b6654e7b5f1af8604923edc8b81885f8ec92f9e3f0a05"
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.66"
@@ -139,12 +64,6 @@ dependencies = [
  "getrandom",
 ]
 
-[[package]]
-name = "rustc-demangle"
-version = "0.1.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
-
 [[package]]
 name = "ryu"
 version = "1.0.15"
@@ -159,7 +78,6 @@ dependencies = [
  "serde",
  "serde_cbor",
  "serde_json",
- "tokio",
 ]
 
 [[package]]
@@ -214,28 +132,6 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "tokio"
-version = "1.32.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17ed6077ed6cd6c74735e21f37eb16dc3935f96878b1fe961074089cc80893f9"
-dependencies = [
- "backtrace",
- "pin-project-lite",
- "tokio-macros",
-]
-
-[[package]]
-name = "tokio-macros"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "unicode-ident"
 version = "1.0.11"
diff --git a/Cargo.toml b/Cargo.toml
index 9c67fab..6b7e6b5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,12 +10,12 @@ path = "src/lib.rs"
 doc = true
 
 [features]
-default = ["std", "serde", "tokio"]
+default = ["std", "serde"]
 std = []
 
 [dependencies]
 serde = { version = "1.0.183", default-features = false, features = ["derive"], optional = true }
-tokio = { version = "1.31.0", default-features = false, features = ["sync", "rt", "time", "macros"], optional = true }
+#tokio = { version = "1.31.0", default-features = false, features = ["sync", "rt", "time", "macros"], optional = true }
 
 [dev-dependencies]
 rand_core = { version = "0.6.4", features = ["getrandom"]}