diff --git a/devel/wizer/files/patch-cargo-crates_wasmtime-42.0.1_src_runtime_vm_sys_unix_signals.rs b/devel/wizer/files/patch-cargo-crates_wasmtime-42.0.1_src_runtime_vm_sys_unix_signals.rs
new file mode 100644
index 000000000000..fee02adc4dca
--- /dev/null
+++ b/devel/wizer/files/patch-cargo-crates_wasmtime-42.0.1_src_runtime_vm_sys_unix_signals.rs
@@ -0,0 +1,21 @@
+-- Add support for FreeBSD ARM64 (aarch64) in wasmtime signal handling
+-- The extract function already supported FreeBSD aarch64, but the store function
+-- was missing support. This causes a compile_error on ARM64 builds.
+-- Fixes: "error: unsupported platform" on aarch64-unknown-freebsd target
+
+--- cargo-crates/wasmtime-42.0.1/src/runtime/vm/sys/unix/signals.rs.orig	2026-04-29 14:21:05 UTC
++++ cargo-crates/wasmtime-42.0.1/src/runtime/vm/sys/unix/signals.rs
+@@ -383,6 +383,13 @@ unsafe fn store_handler_in_ucontext(cx: *mut libc::c_v
+             cx.uc_mcontext.mc_rsp = handler.sp as _;
+             cx.uc_mcontext.mc_rax = 0;
+             cx.uc_mcontext.mc_rdx = 0;
++        } else if #[cfg(all(target_os = "freebsd", target_arch = "aarch64"))] {
++            let cx = unsafe { cx.cast::<libc::mcontext_t>().as_mut().unwrap() };
++            cx.mc_gpregs.gp_elr = handler.pc as _;
++            cx.mc_gpregs.gp_sp = handler.sp as _;
++            cx.mc_gpregs.gp_x[29] = handler.fp as _;
++            cx.mc_gpregs.gp_x[0] = 0;
++            cx.mc_gpregs.gp_x[1] = 0;
+         } else if #[cfg(all(target_os = "openbsd", target_arch = "x86_64"))] {
+             let cx = unsafe { cx.cast::<libc::ucontext_t>().as_mut().unwrap() };
+             cx.sc_rip = handler.pc as _;