diff --git a/CHANGELOG.md b/CHANGELOG.md
index e88c94f..1a55adc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
   This unfortunately hurts ergonomics for quickly running scripts but is a necessary change to allow us to add more commands, such as the new `build` subcommand.
 
+- The `Lune` struct has been renamed to `Runtime` in the Lune rust crate.
+
 ### Added
 
 - Added support for compiling single Lune scripts into standalone executables! ([#140])
diff --git a/src/cli/repl.rs b/src/cli/repl.rs
index 915a314..78a6bd7 100644
--- a/src/cli/repl.rs
+++ b/src/cli/repl.rs
@@ -5,7 +5,7 @@ use clap::Parser;
 use directories::UserDirs;
 use rustyline::{error::ReadlineError, DefaultEditor};
 
-use lune::Lune;
+use lune::Runtime;
 
 const MESSAGE_WELCOME: &str = concat!("Lune v", env!("CARGO_PKG_VERSION"));
 const MESSAGE_INTERRUPT: &str = "Interrupt: ^C again to exit";
@@ -38,7 +38,7 @@ impl ReplCommand {
         let mut prompt_state = PromptState::Regular;
         let mut source_code = String::new();
 
-        let mut lune_instance = Lune::new();
+        let mut lune_instance = Runtime::new();
 
         loop {
             let prompt = match prompt_state {
diff --git a/src/cli/run.rs b/src/cli/run.rs
index e5877a7..35e523e 100644
--- a/src/cli/run.rs
+++ b/src/cli/run.rs
@@ -7,7 +7,7 @@ use tokio::{
     io::{stdin, AsyncReadExt as _},
 };
 
-use lune::Lune;
+use lune::Runtime;
 
 use super::utils::files::{discover_script_path_including_lune_dirs, strip_shebang};
 
@@ -41,7 +41,7 @@ impl RunCommand {
         };
 
         // Create a new lune object with all globals & run the script
-        let result = Lune::new()
+        let result = Runtime::new()
             .with_args(self.script_args)
             .run(&script_display_name, strip_shebang(script_contents))
             .await;
diff --git a/src/executor.rs b/src/executor.rs
index 0b6f3f0..3921537 100644
--- a/src/executor.rs
+++ b/src/executor.rs
@@ -1,6 +1,6 @@
 use std::{env, process::ExitCode};
 
-use lune::Lune;
+use lune::Runtime;
 
 use anyhow::{bail, Result};
 use tokio::fs;
@@ -68,7 +68,7 @@ pub async fn run_standalone(patched_bin: impl AsRef<[u8]>) -> Result<ExitCode> {
     let args = env::args().skip(1).collect::<Vec<_>>();
     let meta = MetaChunk::from_bytes(patched_bin).expect("must be a standalone binary");
 
-    let result = Lune::new()
+    let result = Runtime::new()
         .with_args(args)
         .run("STANDALONE", meta.bytecode)
         .await;
diff --git a/src/lib.rs b/src/lib.rs
index b798775..eaaa157 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -6,4 +6,4 @@ pub mod roblox;
 #[cfg(test)]
 mod tests;
 
-pub use crate::lune::{Lune, LuneError};
+pub use crate::lune::{Runtime, RuntimeError};
diff --git a/src/lune/error.rs b/src/lune/error.rs
index bde101a..840913d 100644
--- a/src/lune/error.rs
+++ b/src/lune/error.rs
@@ -11,14 +11,12 @@ use crate::lune::util::formatting::pretty_format_luau_error;
     An opaque error type for formatted lua errors.
 */
 #[derive(Debug, Clone)]
-pub struct LuneError {
+pub struct RuntimeError {
     error: LuaError,
     disable_colors: bool,
 }
 
-// TODO: Rename this struct to "RuntimeError" instead for
-// the next breaking release, it's a more fitting name
-impl LuneError {
+impl RuntimeError {
     /**
         Enables colorization of the error message when formatted using the [`Display`] trait.
 
@@ -57,7 +55,7 @@ impl LuneError {
     }
 }
 
-impl From<LuaError> for LuneError {
+impl From<LuaError> for RuntimeError {
     fn from(value: LuaError) -> Self {
         Self {
             error: value,
@@ -66,7 +64,7 @@ impl From<LuaError> for LuneError {
     }
 }
 
-impl From<&LuaError> for LuneError {
+impl From<&LuaError> for RuntimeError {
     fn from(value: &LuaError) -> Self {
         Self {
             error: value.clone(),
@@ -75,7 +73,7 @@ impl From<&LuaError> for LuneError {
     }
 }
 
-impl Display for LuneError {
+impl Display for RuntimeError {
     fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
         write!(
             f,
@@ -85,10 +83,8 @@ impl Display for LuneError {
     }
 }
 
-impl Error for LuneError {
-    // TODO: Comment this out when we are ready to also re-export
-    // `mlua` as part of our public library interface in Lune
-    // fn cause(&self) -> Option<&dyn Error> {
-    //     Some(&self.error)
-    // }
+impl Error for RuntimeError {
+    fn cause(&self) -> Option<&dyn Error> {
+        Some(&self.error)
+    }
 }
diff --git a/src/lune/mod.rs b/src/lune/mod.rs
index caa6f1a..6eda448 100644
--- a/src/lune/mod.rs
+++ b/src/lune/mod.rs
@@ -11,19 +11,16 @@ pub(crate) mod util;
 
 use self::scheduler::{LuaSchedulerExt, Scheduler};
 
-pub use error::LuneError;
+pub use error::RuntimeError;
 
-// TODO: Rename this struct to "Runtime" instead for the
-// next breaking release, it's a more fitting name and
-// will probably be more obvious when browsing files
 #[derive(Debug, Clone)]
-pub struct Lune {
+pub struct Runtime {
     lua: &'static Lua,
     scheduler: &'static Scheduler<'static>,
     args: Vec<String>,
 }
 
-impl Lune {
+impl Runtime {
     /**
         Creates a new Lune runtime, with a new Luau VM and task scheduler.
     */
@@ -70,7 +67,7 @@ impl Lune {
         &mut self,
         script_name: impl AsRef<str>,
         script_contents: impl AsRef<[u8]>,
-    ) -> Result<ExitCode, LuneError> {
+    ) -> Result<ExitCode, RuntimeError> {
         let main = self
             .lua
             .load(script_contents.as_ref())
diff --git a/src/lune/util/traits.rs b/src/lune/util/traits.rs
index 32c514d..2c75d65 100644
--- a/src/lune/util/traits.rs
+++ b/src/lune/util/traits.rs
@@ -1,7 +1,7 @@
 use mlua::prelude::*;
 
 use super::formatting::format_label;
-use crate::LuneError;
+use crate::RuntimeError;
 
 pub trait LuaEmitErrorExt {
     fn emit_error(&self, err: LuaError);
@@ -10,6 +10,6 @@ pub trait LuaEmitErrorExt {
 impl LuaEmitErrorExt for Lua {
     fn emit_error(&self, err: LuaError) {
         // NOTE: LuneError will pretty-format this error
-        eprintln!("{}\n{}", format_label("error"), LuneError::from(err));
+        eprintln!("{}\n{}", format_label("error"), RuntimeError::from(err));
     }
 }
diff --git a/src/tests.rs b/src/tests.rs
index a773fda..eb364fa 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -5,7 +5,7 @@ use console::set_colors_enabled;
 use console::set_colors_enabled_stderr;
 use tokio::fs::read_to_string;
 
-use crate::Lune;
+use crate::Runtime;
 
 const ARGS: &[&str] = &["Foo", "Bar"];
 
@@ -20,7 +20,7 @@ macro_rules! create_tests {
             // The rest of the test logic can continue as normal
             let full_name = format!("tests/{}.luau", $value);
             let script = read_to_string(&full_name).await?;
-            let mut lune = Lune::new().with_args(
+            let mut lune = Runtime::new().with_args(
                 ARGS
                     .clone()
                     .iter()