diff --git a/.cargo/config b/.cargo/config
new file mode 100644
index 0000000..d47f983
--- /dev/null
+++ b/.cargo/config
@@ -0,0 +1,11 @@
+[target.x86_64-apple-darwin]
+rustflags = [
+  "-C", "link-arg=-undefined",
+  "-C", "link-arg=dynamic_lookup",
+]
+
+[target.aarch64-apple-darwin]
+rustflags = [
+  "-C", "link-arg=-undefined",
+  "-C", "link-arg=dynamic_lookup",
+]
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..eb5a316
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+target
diff --git a/Cargo.toml b/Cargo.toml
index 114dd41..855426b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,3 +22,4 @@ lua54 = ["mlua/lua54"]
 lua53 = ["mlua/lua53"]
 lua52 = ["mlua/lua52"]
 lua51 = ["mlua/lua51"]
+luajit = ["mlua/luajit"]
diff --git a/tiktoken.lua-0.2.0.rockspec b/tiktoken_core-0.2.1-1.rockspec
similarity index 93%
rename from tiktoken.lua-0.2.0.rockspec
rename to tiktoken_core-0.2.1-1.rockspec
index 04444da..78df676 100644
--- a/tiktoken.lua-0.2.0.rockspec
+++ b/tiktoken_core-0.2.1-1.rockspec
@@ -1,9 +1,9 @@
 package = "tiktoken_core"
-version = "0.2.0"
+version = "0.2.1-1"
 
 source = {
     url = "git+https://github.com/gptlang/lua-tiktoken",
-    tag = "0.2.0",
+    tag = "0.2.1",
 }
 
 description = {