diff --git a/third_party/silentdragonxlite/lib/Cargo.toml b/third_party/silentdragonxlite/lib/Cargo.toml
index 9b03a78..fb3b4ff 100644
--- a/third_party/silentdragonxlite/lib/Cargo.toml
+++ b/third_party/silentdragonxlite/lib/Cargo.toml
@@ -14,3 +14,13 @@ lazy_static = "1.4.0"
 blake3 = "0.3.4"
 silentdragonxlitelib = { path = "../silentdragonxlite-cli/lib" }
 socket2 = "0.3.11"
+
+# Release profile for the static library linked into the Lite app. panic MUST stay "unwind":
+# litelib_execute wraps the command in catch_unwind, and the full-tx fetcher (fulltx_fetch.rs) and
+# threadpool turn scan-job panics into errors by unwinding. Do not set panic = "abort". Do not add
+# `strip`: rustc does not link a staticlib (no-op), and build.sh strips the final executable.
+[profile.release]
+opt-level = 3
+lto = true            # fat LTO; fall back to "thin" if build time/RAM is a problem
+codegen-units = 1
+panic = "unwind"