diff --git a/desktop/build-deb.sh b/desktop/build-deb.sh
index c774edb..4a101ef 100755
--- a/desktop/build-deb.sh
+++ b/desktop/build-deb.sh
@@ -38,7 +38,8 @@ EOF
 
 # Bundle server TypeScript + Fastify + @pubscript/core into a single ESM file,
 # keeping only native addons (better-sqlite3, argon2) external.
-./apps/web/node_modules/.bin/esbuild server/src/index.ts \
+ESBUILD_BIN="$(find "$ROOT_DIR/node_modules/.pnpm" -path '*/esbuild/bin/esbuild' -type f | head -n 1)"
+"$ESBUILD_BIN" server/src/index.ts \
   --bundle \
   --platform=node \
   --target=node22 \