diff --git a/Cargo.toml b/Cargo.toml
index d76dc97..34a26d8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tiktoken-node"
-version = "0.0.6"
+version = "0.0.8"
 edition = "2021"
 
 [lib]
@@ -10,7 +10,7 @@ crate-type = ["cdylib"]
 rayon = "1.7.0"
 napi = "2"
 napi-derive = "2"
-tiktoken-rs = "0.5.8"
+tiktoken-rs = "0.5.9"
 
 [build-dependencies]
 napi-build = "2"
diff --git a/index.d.ts b/index.d.ts
index 0f1ef9d..ab01209 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,4 +1,4 @@
-export function getEncoding(encoding: 'gpt2' | 'r50k_base' | 'p50k_base' | 'p50k_edit' | 'cl100k_base'): Encoding
+export function getEncoding(encoding: 'gpt2' | 'r50k_base' | 'p50k_base' | 'p50k_edit' | 'cl100k_base' | 'o200k_base'): Encoding
 export function encodingForModel(modelName: string): Encoding
 export class Encoding {
   encode(text: string): Array<number>
diff --git a/package-lock.json b/package-lock.json
index 2dc9c7e..f76e323 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,25 +1,25 @@
 {
     "name": "tiktoken-node",
-    "version": "0.0.7",
+    "version": "0.0.8",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "tiktoken-node",
-            "version": "0.0.7",
+            "version": "0.0.8",
             "license": "MIT",
             "devDependencies": {
-                "@napi-rs/cli": "2.18.0",
-                "typescript": "5.3.3"
+                "@napi-rs/cli": "2.18.3",
+                "typescript": "5.4.5"
             },
             "engines": {
                 "node": ">= 14"
             }
         },
         "node_modules/@napi-rs/cli": {
-            "version": "2.18.0",
-            "resolved": "https://registry.npmjs.org/@napi-rs/cli/-/cli-2.18.0.tgz",
-            "integrity": "sha512-lfSRT7cs3iC4L+kv9suGYQEezn5Nii7Kpu+THsYVI0tA1Vh59LH45p4QADaD7hvIkmOz79eEGtoKQ9nAkAPkzA==",
+            "version": "2.18.3",
+            "resolved": "https://registry.npmjs.org/@napi-rs/cli/-/cli-2.18.3.tgz",
+            "integrity": "sha512-L0f4kP0dyG8W5Qtc7MtP73VvLLrOLyRcUEBzknIfu8Jk4Jfhrsx1ItMHgyalYqMSslWdY3ojEfAaU5sx1VyeQQ==",
             "dev": true,
             "bin": {
                 "napi": "scripts/index.js"
@@ -33,9 +33,9 @@
             }
         },
         "node_modules/typescript": {
-            "version": "5.3.3",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
-            "integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
+            "version": "5.4.5",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.5.tgz",
+            "integrity": "sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==",
             "dev": true,
             "bin": {
                 "tsc": "bin/tsc",
diff --git a/package.json b/package.json
index c25dda8..0bcc8e2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "tiktoken-node",
-    "version": "0.0.7",
+    "version": "0.0.8",
     "types": "index.d.ts",
     "main": "index.cjs",
     "napi": {
@@ -29,8 +29,8 @@
     ],
     "license": "MIT",
     "devDependencies": {
-        "@napi-rs/cli": "2.18.0",
-        "typescript": "5.3.3"
+        "@napi-rs/cli": "2.18.3",
+        "typescript": "5.4.5"
     },
     "engines": {
         "node": ">= 14"
diff --git a/src/lib.rs b/src/lib.rs
index 801a129..584b439 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -46,7 +46,7 @@ impl Encoding {
 
 #[napi]
 pub fn get_encoding(
-    #[napi(ts_arg_type = "'gpt2' | 'r50k_base' | 'p50k_base' | 'p50k_edit' | 'cl100k_base'")]
+    #[napi(ts_arg_type = "'gpt2' | 'r50k_base' | 'p50k_base' | 'p50k_edit' | 'cl100k_base' | 'o200k_base'")]
     encoding: String,
 ) -> Result<Encoding, Error> {
     let encoding: Result<tiktoken_rs::CoreBPE, Error> = match encoding.as_str() {
@@ -55,6 +55,7 @@ pub fn get_encoding(
         "p50k_base" => Ok(tiktoken_rs::p50k_base().unwrap()),
         "p50k_edit" => Ok(tiktoken_rs::p50k_edit().unwrap()),
         "cl100k_base" => Ok(tiktoken_rs::cl100k_base().unwrap()),
+        "o200k_base" => Ok(tiktoken_rs::o200k_base().unwrap()),
         _ => Err(Error::from_reason("Invalid encoding")),
     };