diff --git a/Cargo.lock b/Cargo.lock
index 3aa631c..9d60ca5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -462,12 +462,6 @@ dependencies = [
  "rustc_version",
 ]
 
-[[package]]
-name = "exitcode"
-version = "1.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de853764b47027c2e862a995c34978ffa63c1501f2e15f987ba11bd4f9bba193"
-
 [[package]]
 name = "fastrand"
 version = "1.8.0"
@@ -499,7 +493,6 @@ dependencies = [
  "clap-verbosity-flag",
  "criterion",
  "error-stack",
- "exitcode",
  "goldenfile",
  "itoa-const",
  "log",
@@ -515,6 +508,7 @@ dependencies = [
  "rustdoc-json",
  "seahash",
  "simple_logger",
+ "sysexits",
  "tempfile",
  "thiserror",
  "tokio",
@@ -1383,6 +1377,12 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "sysexits"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1569182c734bec75e863247ebbc4423493a46525314245426f48082e72674a0"
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
diff --git a/Cargo.toml b/Cargo.toml
index ac95705..d2ed4af 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,6 @@ clap = { version = "4.0.9", features = ["derive", "wrap_help"] }
 clap-num = "1.0.0"
 clap-verbosity-flag = "2.0.0"
 error-stack = "0.2.1"
-exitcode = "1.1.2"
 # TODO use the real itoa once https://github.com/dtolnay/itoa/pull/34 goes through
 itoa-const = "1.0.1"
 log = { version = "0.4.17", features = ["release_max_level_info"] }
@@ -25,6 +24,7 @@ rand = { version = "0.8.5", default-features = false }
 rand_distr = "0.4.3"
 rand_xoshiro = "0.6.0"
 simple_logger = { version = "2.3.0", default-features = false, features = ["colors"] }
+sysexits = "0.3.2"
 thiserror = "1.0.37"
 tokio = { version = "1.21.2", features = ["rt"] }
 tracing = { version = "0.1.36", features = ["release_max_level_off", "log"] }
diff --git a/src/core/scheduler.rs b/src/core/scheduler.rs
index 05af09f..bf0cc8d 100644
--- a/src/core/scheduler.rs
+++ b/src/core/scheduler.rs
@@ -52,9 +52,9 @@ pub async fn run(
                 .await
                 .into_report()
                 .change_context(Error::TaskJoin)
-                .attach(ExitCode::from(u8::try_from(exitcode::SOFTWARE).unwrap()))?
+                .attach(ExitCode::from(sysexits::ExitCode::Software))?
                 .change_context(Error::Io)
-                .attach(ExitCode::from(u8::try_from(exitcode::IOERR).unwrap()))?;
+                .attach(ExitCode::from(sysexits::ExitCode::IoErr))?;
             #[cfg(dry_run)]
             let outcome = task;
 
diff --git a/src/generator.rs b/src/generator.rs
index b0bae9a..109a0b0 100644
--- a/src/generator.rs
+++ b/src/generator.rs
@@ -5,8 +5,8 @@
 )]
 
 use std::{
-    cmp::max, fs::create_dir_all, io::Write, num::NonZeroUsize, path::PathBuf,
-    process::ExitCode, thread,
+    cmp::max, fs::create_dir_all, io::Write, num::NonZeroUsize, path::PathBuf, process::ExitCode,
+    thread,
 };
 
 use error_stack::{IntoReport, Report, Result, ResultExt};
@@ -169,14 +169,14 @@ fn validated_options(generator: Generator) -> Result<Configuration, Error> {
         .into_report()
         .attach_printable_lazy(|| format!("Failed to create directory {:?}", generator.root_dir))
         .change_context(Error::InvalidEnvironment)
-        .attach(ExitCode::from(u8::try_from(exitcode::IOERR).unwrap()))?;
+        .attach(ExitCode::from(sysexits::ExitCode::IoErr))?;
     if generator
         .root_dir
         .read_dir()
         .into_report()
         .attach_printable_lazy(|| format!("Failed to read directory {:?}", generator.root_dir))
         .change_context(Error::InvalidEnvironment)
-        .attach(ExitCode::from(u8::try_from(exitcode::IOERR).unwrap()))?
+        .attach(ExitCode::from(sysexits::ExitCode::IoErr))?
         .count()
         != 0
     {
@@ -185,7 +185,7 @@ fn validated_options(generator: Generator) -> Result<Configuration, Error> {
                 "The root directory {:?} must be empty.",
                 generator.root_dir
             ))
-            .attach(ExitCode::from(u8::try_from(exitcode::DATAERR).unwrap()));
+            .attach(ExitCode::from(sysexits::ExitCode::DataErr));
     }
 
     let num_files = generator.num_files_with_ratio.num_files.get() as f64;
@@ -323,7 +323,7 @@ fn run_generator(config: Configuration) -> Result<GeneratorStats, Error> {
         .build()
         .into_report()
         .change_context(Error::RuntimeCreation)
-        .attach(ExitCode::from(u8::try_from(exitcode::OSERR).unwrap()))?;
+        .attach(ExitCode::from(sysexits::ExitCode::OsErr))?;
 
     event!(Level::INFO, config = ?config, "Starting config");
     runtime.block_on(run_generator_async(config, parallelism))