diff --git a/src/cmd/build.rs b/src/cmd/build.rs
index 2a5fdf064b73c448b5aa7f96c3bc87c4c5ae61c4..0d32be54cebabcb25cd65c5344315210a227b431 100644
--- a/src/cmd/build.rs
+++ b/src/cmd/build.rs
@@ -249,7 +249,7 @@ fn exec_cargo_for_wasm_target(
     // Currently will override user defined RUSTFLAGS from .cargo/config. See https://github.com/paritytech/cargo-contract/issues/98.
     std::env::set_var(
         "RUSTFLAGS",
-        "-C link-arg=-zstack-size=65536 -C link-arg=--import-memory",
+        "-C link-arg=-zstack-size=65536 -C link-arg=--import-memory -Clinker-plugin-lto",
     );
 
     let cargo_build = |manifest_path: &ManifestPath| {