diff --git a/README.md b/README.md
index 53a8573..79e35b0 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # Deckster
 ## To do
-- Exit with a non-zero status code when a handler process exits unexpectedly.
 - Move loupedeck_serial and pa_volume_interface out of this repository.
-- 
+- Publish libraries to crates.io
+- Move handlers to their own repositories
 
 ## Contributing
 ### Terminology
diff --git a/src/handler_runner.rs b/src/handler_runner.rs
index c24dd95..34f0e8d 100644
--- a/src/handler_runner.rs
+++ b/src/handler_runner.rs
@@ -1,7 +1,7 @@
 use std::collections::HashMap;
 use std::ffi::OsString;
 use std::path::Path;
-use std::process::Stdio;
+use std::process::{exit, Stdio};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
 
@@ -226,6 +226,8 @@ async fn start_handler(
                 None => log::error!("The '{handler_name}' handler was unexpectedly terminated by a signal."),
                 Some(code) => log::error!("The '{handler_name}' handler exited unexpectedly with status code {code}"),
             }
+
+            exit(1);
         } else {
             log::debug!("The '{handler_name}' handler exited: {exit_status:#?}");
         }