diff --git a/.github/workflows/release-build.yaml b/.github/workflows/release-build.yaml
index 745bf939..17bc6a14 100644
--- a/.github/workflows/release-build.yaml
+++ b/.github/workflows/release-build.yaml
@@ -39,7 +39,10 @@ jobs:
           mkdir release
           cp ./out/sjsonnet/js/$SCALA_VERSION/fullLinkJS.dest/main.js ./release/sjsonnet-$VERSION.js
           cp ./out/sjsonnet/js/$SCALA_VERSION/fullLinkJS.dest/main.js.map ./release/sjsonnet-$VERSION.js.map
-          cp -r ./out/sjsonnet/wasm/$SCALA_VERSION/fullLinkJS.dest/ ./release/sjsonnet-wasm-$VERSION/
+          pushd ./out/sjsonnet/wasm/$SCALA_VERSION/fullLinkJS.dest
+          zip -r sjsonnet-wasm-$VERSION.zip *
+          popd
+          cp ./out/sjsonnet/wasm/$SCALA_VERSION/fullLinkJS.dest/sjsonnet-wasm-$VERSION.zip ./release/sjsonnet-wasm-$VERSION.zip
           cp ./out/sjsonnet/jvm/$SCALA_VERSION/assembly.dest/out.jar ./release/sjsonnet-$VERSION.jar
           cp ./out/sjsonnet/jvm/$SCALA_VERSION/client/assembly.dest/out.jar ./release/sjsonnet-client-$VERSION.jar
           cp ./out/sjsonnet/jvm/$SCALA_VERSION/server/assembly.dest/out.jar ./release/sjsonnet-server-$VERSION.jar