diff --git a/Cargo.lock b/Cargo.lock
index 9d94c0e..882624e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,54 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "anstream"
+version = "0.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cd2405b3ac1faab2990b74d728624cd9fd115651fcecc7c2d8daf01376275ba"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7079075b41f533b8c61d2a4d073c4676e1f8b249ff94a393b0595db304e0dd87"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c75ac65da39e5fe5ab759307499ddad880d724eed2f6ce5b5e8a26f4f387928c"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e28923312444cdd728e4738b3f9c9cac739500909bb3d3c94b43551b16517648"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cd54b81ec8d6180e24654d0b371ad22fc3dd083b6ff8ba325b72e00c87660a7"
+dependencies = [
+ "anstyle",
+ "windows-sys",
+]
+
 [[package]]
 name = "bitflags"
 version = "2.4.1"
@@ -20,6 +68,52 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "clap"
+version = "4.4.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58e54881c004cec7895b0068a0a954cd5d62da01aef83fa35b1e594497bf5445"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.4.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59cb82d7f531603d2fd1f507441cdd35184fa81beff7bd489570de7f773460bb"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf9804afaaf59a91e75b022a30fb7229a7901f60c755489cc61c9b423b836442"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "702fc72eb24e5a1e48ce58027a675bc24edd52096d5397d4aea7c6dd9eca0bd1"
+
+[[package]]
+name = "colorchoice"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
+
 [[package]]
 name = "ctrlc"
 version = "3.4.2"
@@ -30,11 +124,18 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "heck"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+
 [[package]]
 name = "lc3"
 version = "0.1.0"
 dependencies = [
  "byteorder",
+ "clap",
  "ctrlc",
  "libc",
  "termios",
@@ -57,6 +158,41 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "proc-macro2"
+version = "1.0.76"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95fc56cda0b5c3325f5fbbd7ff9fda9e02bb00bb3dac51252d2f1bfa1cb8cc8c"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "strsim"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
+
+[[package]]
+name = "syn"
+version = "2.0.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "termios"
 version = "0.3.3"
@@ -66,6 +202,18 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+
+[[package]]
+name = "utf8parse"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
diff --git a/Cargo.toml b/Cargo.toml
index e6c1966..f6fae21 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,6 +7,7 @@ edition = "2021"
 
 [dependencies]
 byteorder = "1.5.0"
+clap = { version = "4.4.16", features = ["derive"] }
 ctrlc = "3.4.2"
 libc = "0.2.151"
 termios = "0.3.3"
diff --git a/src/main.rs b/src/main.rs
index eaecd22..4317e3c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,14 +4,27 @@
 
 mod vm;
 use crate::vm::{terminal_io, VM};
-use std::env;
+use clap::Parser;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    /// Enables debug printing to stderr (which can be separately piped to a file).
+    #[arg(long)]
+    debug: bool,
+
+    /// Program file
+    program: Option<String>,
+}
 
 fn main() {
-    let args: Vec<_> = env::args().collect();
+    let cli = Args::parse();
 
     let mut term = terminal_io::TerminalIO::new();
 
     let mut vm = VM::new(&mut term);
-    vm.read_program(args.get(1).expect("No program file given"));
+    vm.set_debugging(cli.debug);
+
+    vm.read_program(&cli.program.expect("No program file given"));
     vm.execute();
 }
diff --git a/src/vm/mod.rs b/src/vm/mod.rs
index fcb1df5..1d2609f 100644
--- a/src/vm/mod.rs
+++ b/src/vm/mod.rs
@@ -133,6 +133,10 @@ impl VM<'_> {
         }
     }
 
+    pub fn set_debugging(&mut self, state: bool) {
+        self.debug_state.debugging = state;
+    }
+
     pub fn read_program(&mut self, path: &String) {
         let f = File::open(path).expect("Could not open program file");
         let mut f = BufReader::new(f);