diff --git a/barretenberg/ts/scripts/build_wasm.sh b/barretenberg/ts/scripts/build_wasm.sh
index 43b1d559421..e0e283a20f2 100755
--- a/barretenberg/ts/scripts/build_wasm.sh
+++ b/barretenberg/ts/scripts/build_wasm.sh
@@ -20,5 +20,5 @@ fi
 # When building the browser bundle, both wasms are inlined directly.
 mkdir -p ./dest/node/barretenberg_wasm
 mkdir -p ./dest/node-cjs/barretenberg_wasm
-cp ../cpp/build-wasm-threads/bin/barretenberg.wasm ./dest/node/barretenberg_wasm/barretenberg-threads.wasm
-cp ../cpp/build-wasm-threads/bin/barretenberg.wasm ./dest/node-cjs/barretenberg_wasm/barretenberg-threads.wasm
+cp ../cpp/build-wasm-threads/bin/barretenberg.wasm.gz ./dest/node/barretenberg_wasm/barretenberg-threads.wasm.gz
+cp ../cpp/build-wasm-threads/bin/barretenberg.wasm.gz ./dest/node-cjs/barretenberg_wasm/barretenberg-threads.wasm.gz