diff --git a/.gitignore b/.gitignore
index 31c2bf1..65e5eb0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,5 @@ erl_crash.dump
 tds_encoding-*.tar
 
 /priv/native/
+
+/native/*/target
diff --git a/lib/tds_encoding.ex b/lib/tds_encoding.ex
index 762e86f..ed0d87f 100644
--- a/lib/tds_encoding.ex
+++ b/lib/tds_encoding.ex
@@ -31,10 +31,13 @@ defmodule Tds.Encoding do
 
       iex> Tds.Encoding.encode("¥₪ש", "windows-1255")
       <<0xA5, 0xA4, 0xF9>>
-      iex> Tds.Encoding.decode(<<0xA5, 0xA4, 0xF9>>, "windows-15")
+      iex> Tds.Encoding.decode(<<0xA5, 0xA4, 0xF9>>, "windows-1255")
       "¥₪ש"
   """
-  use Rustler, otp_app: :tds_encoding, crate: "tds_encoding"
+  use Rustler,
+    otp_app: :tds_encoding,
+    crate: "tds_encoding",
+    mode: if Mix.env() == :prod, do: :release, else: :debug
 
   @doc """
   Encodes utf-8 string using given codepage. If there are any unknown codes they
diff --git a/mix.exs b/mix.exs
index d369a7b..6c88ac6 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,16 +4,11 @@ defmodule Tds.Encoding.MixProject do
   def project do
     [
       app: :tds_encoding,
-      compilers: [:rustler] ++ Mix.compilers(),
+      compilers: Mix.compilers(),
       version: "1.0.0",
       elixir: "~> 1.9",
       start_permanent: Mix.env() == :prod,
       deps: deps(),
-      rustler_crates: [
-        tds_encoding: [
-          mode: (if Mix.env() == :prod, do: :release, else: :debug)
-        ]
-      ],
       description: "String encoding/decoding NIF using rust [encoding](https://crates.io/crates/encoding) library",
       package: package(),
     ]
@@ -29,7 +24,7 @@ defmodule Tds.Encoding.MixProject do
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      {:rustler, "~> 0.21.0"},
+      {:rustler, "~> 0.22.0"},
       {:ex_doc, ">= 0.0.0", only: :dev, runtime: false},
     ]
   end
diff --git a/mix.lock b/mix.lock
index f59f9a9..63353d7 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,9 +1,11 @@
 %{
-  "earmark": {:hex, :earmark, "1.4.3", "364ca2e9710f6bff494117dbbd53880d84bebb692dafc3a78eb50aa3183f2bfd", [:mix], [], "hexpm"},
-  "ex_doc": {:hex, :ex_doc, "0.21.3", "857ec876b35a587c5d9148a2512e952e24c24345552259464b98bfbb883c7b42", [:mix], [{:earmark, "~> 1.4", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm"},
-  "makeup": {:hex, :makeup, "1.0.0", "671df94cf5a594b739ce03b0d0316aa64312cee2574b6a44becb83cd90fb05dc", [:mix], [{:nimble_parsec, "~> 0.5.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm"},
-  "makeup_elixir": {:hex, :makeup_elixir, "0.14.0", "cf8b7c66ad1cff4c14679698d532f0b5d45a3968ffbcbfd590339cb57742f1ae", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm"},
-  "nimble_parsec": {:hex, :nimble_parsec, "0.5.3", "def21c10a9ed70ce22754fdeea0810dafd53c2db3219a0cd54cf5526377af1c6", [:mix], [], "hexpm"},
-  "rustler": {:hex, :rustler, "0.21.0", "68cc4fc015d0b9541865ea78e78e9ef2dd91ee4be80bf543fd15791102a45aca", [:mix], [{:toml, "~> 0.5.2", [hex: :toml, repo: "hexpm", optional: false]}], "hexpm"},
-  "toml": {:hex, :toml, "0.5.2", "e471388a8726d1ce51a6b32f864b8228a1eb8edc907a0edf2bb50eab9321b526", [:mix], [], "hexpm"},
+  "earmark": {:hex, :earmark, "1.4.3", "364ca2e9710f6bff494117dbbd53880d84bebb692dafc3a78eb50aa3183f2bfd", [:mix], [], "hexpm", "8cf8a291ebf1c7b9539e3cddb19e9cef066c2441b1640f13c34c1d3cfc825fec"},
+  "earmark_parser": {:hex, :earmark_parser, "1.4.15", "b29e8e729f4aa4a00436580dcc2c9c5c51890613457c193cc8525c388ccb2f06", [:mix], [], "hexpm", "044523d6438ea19c1b8ec877ec221b008661d3c27e3b848f4c879f500421ca5c"},
+  "ex_doc": {:hex, :ex_doc, "0.25.3", "3edf6a0d70a39d2eafde030b8895501b1c93692effcbd21347296c18e47618ce", [:mix], [{:earmark_parser, "~> 1.4.0", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "9ebebc2169ec732a38e9e779fd0418c9189b3ca93f4a676c961be6c1527913f5"},
+  "makeup": {:hex, :makeup, "1.0.5", "d5a830bc42c9800ce07dd97fa94669dfb93d3bf5fcf6ea7a0c67b2e0e4a7f26c", [:mix], [{:nimble_parsec, "~> 0.5 or ~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "cfa158c02d3f5c0c665d0af11512fed3fba0144cf1aadee0f2ce17747fba2ca9"},
+  "makeup_elixir": {:hex, :makeup_elixir, "0.15.1", "b5888c880d17d1cc3e598f05cdb5b5a91b7b17ac4eaf5f297cb697663a1094dd", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.1", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "db68c173234b07ab2a07f645a5acdc117b9f99d69ebf521821d89690ae6c6ec8"},
+  "makeup_erlang": {:hex, :makeup_erlang, "0.1.1", "3fcb7f09eb9d98dc4d208f49cc955a34218fc41ff6b84df7c75b3e6e533cc65f", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "174d0809e98a4ef0b3309256cbf97101c6ec01c4ab0b23e926a9e17df2077cbb"},
+  "nimble_parsec": {:hex, :nimble_parsec, "1.1.0", "3a6fca1550363552e54c216debb6a9e95bd8d32348938e13de5eda962c0d7f89", [:mix], [], "hexpm", "08eb32d66b706e913ff748f11694b17981c0b04a33ef470e33e11b3d3ac8f54b"},
+  "rustler": {:hex, :rustler, "0.22.0", "e2930f9d6933e910f87526bb0a7f904e32b62a7e838a3ca4a884ee7fdfb957ed", [:mix], [{:toml, "~> 0.5.2", [hex: :toml, repo: "hexpm", optional: false]}], "hexpm", "01f5989dd511ebec09be481e07d3c59773d5373c5061e09d3ebc3ef61811b49d"},
+  "toml": {:hex, :toml, "0.5.2", "e471388a8726d1ce51a6b32f864b8228a1eb8edc907a0edf2bb50eab9321b526", [:mix], [], "hexpm", "f1e3dabef71fb510d015fad18c0e05e7c57281001141504c6b69d94e99750a07"},
 }
diff --git a/native/tds_encoding/.cargo/config b/native/tds_encoding/.cargo/config
index a237fd1..1564217 100644
--- a/native/tds_encoding/.cargo/config
+++ b/native/tds_encoding/.cargo/config
@@ -2,4 +2,10 @@
 rustflags = [
     "-C", "link-arg=-undefined",
     "-C", "link-arg=dynamic_lookup",
+]
+
+[target.aarch64-apple-darwin]
+rustflags = [
+    "-C", "link-arg=-undefined",
+    "-C", "link-arg=dynamic_lookup", 
 ]
\ No newline at end of file
diff --git a/native/tds_encoding/Cargo.lock b/native/tds_encoding/Cargo.lock
index 43f545f..8bdd186 100644
--- a/native/tds_encoding/Cargo.lock
+++ b/native/tds_encoding/Cargo.lock
@@ -1,38 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-[[package]]
-name = "backtrace"
-version = "0.3.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f80256bc78f67e7df7e36d77366f636ed976895d91fe2ab9efa3973e8fe8c4f"
-dependencies = [
- "backtrace-sys",
- "cfg-if",
- "libc",
- "rustc-demangle",
-]
-
-[[package]]
-name = "backtrace-sys"
-version = "0.1.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d6575f128516de27e3ce99689419835fce9643a9b215a14d2b5b685be018491"
-dependencies = [
- "cc",
- "libc",
-]
-
-[[package]]
-name = "cc"
-version = "1.0.50"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95e28fa049fda1c330bcf9d723be7663a899c4679724b34c81e9f5a326aab8cd"
-
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+version = 3
 
 [[package]]
 name = "encoding"
@@ -98,15 +66,6 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a246d82be1c9d791c5dfde9a2bd045fc3cbba3fa2b11ad558f27d01712f00569"
 
-[[package]]
-name = "failure"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8273f13c977665c5db7eb2b99ae520952fe5ac831ae4cd09d80c4c7042b5ed9"
-dependencies = [
- "backtrace",
-]
-
 [[package]]
 name = "heck"
 version = "0.3.1"
@@ -122,53 +81,40 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
-[[package]]
-name = "libc"
-version = "0.2.66"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d515b1f41455adea1313a4a2ac8a8a477634fbae63cc6100e3aebb207ce61558"
-
 [[package]]
 name = "proc-macro2"
-version = "0.4.30"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
+checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
 dependencies = [
  "unicode-xid",
 ]
 
 [[package]]
 name = "quote"
-version = "0.6.13"
+version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
+checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
 dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "rustc-demangle"
-version = "0.1.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
-
 [[package]]
 name = "rustler"
-version = "0.21.0"
+version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "087d812084e88e84d09ad05abebb24e2967b287ddfa692296f742bcf3e403f93"
+checksum = "b787d3b2a80007f41cd4c0c310cdeb3936192768159585f65ecc7e96faf97fc3"
 dependencies = [
  "lazy_static",
  "rustler_codegen",
  "rustler_sys",
- "which",
 ]
 
 [[package]]
 name = "rustler_codegen"
-version = "0.21.0"
+version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62d5150810c3a06997d644cacfd0d9464441aae1d46e0bdf66cef67d379fa443"
+checksum = "b5a1f867002b6f0130f47abf215cac4405646db6f5d7b009b21c890980490aa4"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -178,18 +124,18 @@ dependencies = [
 
 [[package]]
 name = "rustler_sys"
-version = "2.0.0"
+version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e2c6dd78a5cffd4294c4aca568522736b8a67f0e8ccdb6a55354dc933726bc4"
+checksum = "1cb382fde4f421c51555919e9920b058c0286f6bf59e53d02eb4d281eae6758b"
 dependencies = [
  "unreachable",
 ]
 
 [[package]]
 name = "syn"
-version = "0.15.44"
+version = "1.0.77"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
+checksum = "5239bc68e0fef57495900cfea4e8dc75596d9a319d7e16b1e0a440d24e6fe0a0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -198,7 +144,7 @@ dependencies = [
 
 [[package]]
 name = "tds_encoding"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "encoding",
  "lazy_static",
@@ -214,15 +160,15 @@ checksum = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
 
 [[package]]
 name = "unicode-xid"
-version = "0.1.0"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
+checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
 [[package]]
 name = "unreachable"
-version = "0.1.1"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f2ae5ddb18e1c92664717616dd9549dde73f539f01bd7b77c2edb2446bdff91"
+checksum = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
 dependencies = [
  "void",
 ]
@@ -232,13 +178,3 @@ name = "void"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
-
-[[package]]
-name = "which"
-version = "2.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b57acb10231b9493c8472b20cb57317d0679a49e0bdbee44b3b803a6473af164"
-dependencies = [
- "failure",
- "libc",
-]
diff --git a/native/tds_encoding/Cargo.toml b/native/tds_encoding/Cargo.toml
index f2b9eef..f1c1859 100644
--- a/native/tds_encoding/Cargo.toml
+++ b/native/tds_encoding/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tds_encoding"
-version = "0.1.0"
+version = "0.2.0"
 authors = []
 
 [lib]
@@ -9,7 +9,7 @@ path = "src/lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-rustler = "0.21.0"
-rustler_codegen = "0.21.0"
+rustler = "0.22.0"
+rustler_codegen = "0.22.0"
 lazy_static = "1.4"
 encoding = "0.2.33"
\ No newline at end of file
diff --git a/native/tds_encoding/src/lib.rs b/native/tds_encoding/src/lib.rs
index 065d401..fee0855 100644
--- a/native/tds_encoding/src/lib.rs
+++ b/native/tds_encoding/src/lib.rs
@@ -1,66 +1,53 @@
 #[macro_use]
 extern crate rustler;
-// #[macro_use]
 extern crate rustler_codegen;
-// #[macro_use]
-extern crate lazy_static;
 extern crate encoding;
+extern crate lazy_static;
 
-
-use encoding::{DecoderTrap, EncoderTrap};
 use encoding::label::encoding_from_whatwg_label;
+use encoding::{DecoderTrap, EncoderTrap};
 
-use rustler::{Env, Term, NifResult, Encoder};
-use rustler::types::binary::{ Binary, OwnedBinary };
-use rustler::{Error};
+use rustler::types::binary::{Binary, OwnedBinary};
+use rustler::Error;
+use rustler::{Encoder, Env, NifResult, Term};
 
 use std::io::Write;
 
-
 mod atoms {
-    rustler_atoms! {
-        atom ok;
-        atom error;
-        atom unknown_encoding;
+    atoms! {
+        ok,
+        error,
+        unknown_encoding,
         //atom __true__ = "true";
         //atom __false__ = "false";
     }
 }
 
-rustler_export_nifs! {
-    "Elixir.Tds.Encoding",
-    [
-        ("encode", 2, encode),
-        ("decode", 2, decode)
-    ],
-    None
-}
-
-fn decode<'a>(env: Env<'a>, args: &[Term<'a>]) -> NifResult<Term<'a>> {
-    let enc : String = args[1].decode()?;
+rustler::init!("Elixir.Tds.Encoding", [encode, decode]);
 
+#[rustler::nif]
+fn decode<'a>(env: Env<'a>, in_binary: Binary, enc: String) -> NifResult<Term<'a>> {
     match encoding_from_whatwg_label(&enc) {
         Some(encoding) => {
-            let in_binary : Binary = args[0].decode()?;
             let in_str = in_binary.to_owned().unwrap();
-            let res =  encoding.decode(in_str.as_slice(), DecoderTrap::Replace).unwrap();
-            return Ok(res.encode(env))
-        },
-        None => return Err(Error::BadArg),
+            let res = encoding
+                .decode(in_str.as_slice(), DecoderTrap::Replace)
+                .unwrap();
+            Ok(res.encode(env))
+        }
+        None => Err(Error::BadArg)
     }
 }
 
-fn encode<'a>(env: Env<'a>, args: &[Term<'a>]) -> NifResult<Term<'a>> {
-    let enc : String = args[1].decode()?;
- 
+#[rustler::nif]
+fn encode<'a>(env: Env<'a>, in_str: &str, enc: String) -> NifResult<Term<'a>> {
     match encoding_from_whatwg_label(&enc) {
         Some(encoding) => {
-            let in_str : &str = args[0].decode()?;
             let enc_bin = encoding.encode(in_str, EncoderTrap::Replace).unwrap();
             let mut bin = OwnedBinary::new(enc_bin.len()).unwrap();
-            bin.as_mut_slice().write(&enc_bin).unwrap();
-            return Ok(bin.release(env).encode(env))
-        },
-        None => return Err(Error::BadArg),
+            bin.as_mut_slice().write_all(&enc_bin).unwrap();
+            Ok(bin.release(env).encode(env))
+        }
+        None => Err(Error::BadArg)
     }
 }