diff --git a/artiq/firmware/ksupport/Cargo.toml b/artiq/firmware/ksupport/Cargo.toml
index fbedbd792..5556eb15e 100644
--- a/artiq/firmware/ksupport/Cargo.toml
+++ b/artiq/firmware/ksupport/Cargo.toml
@@ -20,3 +20,5 @@ dyld = { path = "../libdyld" }
 board_misoc = { path = "../libboard_misoc" }
 board_artiq = { path = "../libboard_artiq" }
 riscv = { version = "0.6.0", features = ["inline-asm"] }
+libc = { path = "../libc" }
+unwind = { path = "../libunwind" }
diff --git a/artiq/firmware/ksupport/lib.rs b/artiq/firmware/ksupport/lib.rs
index b4a430289..bbbea4c02 100644
--- a/artiq/firmware/ksupport/lib.rs
+++ b/artiq/firmware/ksupport/lib.rs
@@ -1,5 +1,5 @@
 #![feature(lang_items, asm, panic_unwind, libc, unwind_attributes,
-           panic_implementation, panic_info_message, nll)]
+           panic_handler, panic_info_message, nll)]
 #![no_std]
 
 extern crate libc;
@@ -51,7 +51,7 @@ macro_rules! recv {
 }
 
 #[no_mangle] // https://github.com/rust-lang/rust/issues/{38281,51647}
-#[panic_implementation]
+#[panic_handler]
 pub fn panic_fmt(info: &core::panic::PanicInfo) -> ! {
     if let Some(location) = info.location() {
         send(&Log(format_args!("panic at {}:{}:{}",