diff --git a/pyscriptjs/esbuild.mjs b/pyscriptjs/esbuild.mjs
index 5a0d4ca7..f455f314 100644
--- a/pyscriptjs/esbuild.mjs
+++ b/pyscriptjs/esbuild.mjs
@@ -69,7 +69,7 @@ const esbuild = async () => {
     await Promise.all([
         build({
             ...pyScriptConfig,
-            sourcemap: false,
+            sourcemap: true,
             minify: false,
             outfile: 'build/pyscript.js',
         }),