diff --git a/Cargo.lock b/Cargo.lock
index cf6501e..2a6bce7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -53,15 +53,13 @@ checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "bindgen"
-version = "0.59.2"
+version = "0.64.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2bd2a9a458e8f4304c52c43ebb0cfbd520289f8379a52e329a38afda99bf8eb8"
+checksum = "c4243e6031260db77ede97ad86c27e501d646a27ab57b59a574f725d98ab1fb4"
 dependencies = [
  "bitflags",
  "cexpr",
  "clang-sys",
- "clap",
- "env_logger 0.9.3",
  "lazy_static",
  "lazycell",
  "log",
@@ -71,6 +69,7 @@ dependencies = [
  "regex",
  "rustc-hash",
  "shlex",
+ "syn",
  "which",
 ]
 
@@ -281,20 +280,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
 dependencies = [
  "atty",
- "humantime 1.3.0",
- "log",
- "regex",
- "termcolor",
-]
-
-[[package]]
-name = "env_logger"
-version = "0.9.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a12e6657c4c97ebab115a42dcee77225f7f482cdd841cf7088c657a42e9e00e7"
-dependencies = [
- "atty",
- "humantime 2.1.0",
+ "humantime",
  "log",
  "regex",
  "termcolor",
@@ -348,12 +334,6 @@ dependencies = [
  "quick-error",
 ]
 
-[[package]]
-name = "humantime"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
-
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -474,8 +454,7 @@ checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
 [[package]]
 name = "onig"
 version = "6.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c4b31c8722ad9171c6d77d3557db078cab2bd50afcc9d09c8b315c59df8ca4f"
+source = "git+https://github.com/rust-onig/rust-onig#fa90c0e97e90a056af89f183b23cd417b59ee6a2"
 dependencies = [
  "bitflags",
  "libc",
@@ -486,8 +465,7 @@ dependencies = [
 [[package]]
 name = "onig_sys"
 version = "69.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b829e3d7e9cc74c7e315ee8edb185bf4190da5acde74afd7fc59c35b1f086e7"
+source = "git+https://github.com/rust-onig/rust-onig#fa90c0e97e90a056af89f183b23cd417b59ee6a2"
 dependencies = [
  "bindgen",
  "cc",
@@ -777,12 +755,12 @@ dependencies = [
 
 [[package]]
 name = "teip"
-version = "2.2.0"
+version = "2.3.0"
 dependencies = [
  "assert_cmd",
  "cfg-if 0.1.10",
  "criterion",
- "env_logger 0.7.1",
+ "env_logger",
  "lazy_static",
  "log",
  "onig",
diff --git a/Cargo.toml b/Cargo.toml
index df44516..e50d087 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,4 +36,4 @@ harness = false
 
 [features]
 default = []
-oniguruma = ["onig", "onig_sys"]
+oniguruma = ["onig"]