diff --git a/gulpfile.js b/gulpfile.js
index 8e95a5257..b1bf1e5d3 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -349,6 +349,7 @@ function createScriptingBundle(defines) {
 function createSandboxBundle(defines, code) {
   var sandboxAMDName = "pdfjs-dist/build/pdf.sandbox";
   var sandboxOutputName = "pdf.sandbox.js";
+
   var sandboxFileConfig = createWebpackConfig(defines, {
     filename: sandboxOutputName,
     library: sandboxAMDName,
@@ -372,7 +373,7 @@ function createSandboxBundle(defines, code) {
   });
   return (
     gulp
-      .src("./src/scripting_api/quickjs-sandbox.js")
+      .src("./src/pdf.sandbox.js")
       .pipe(webpack2Stream(sandboxFileConfig))
       .pipe(replaceWebpackRequire())
       .pipe(replaceJSRootName(sandboxAMDName, "pdfjsSandbox"))
diff --git a/src/scripting_api/quickjs-sandbox.js b/src/pdf.sandbox.js
similarity index 91%
rename from src/scripting_api/quickjs-sandbox.js
rename to src/pdf.sandbox.js
index cbf6e4e87..8bb6b37b8 100644
--- a/src/scripting_api/quickjs-sandbox.js
+++ b/src/pdf.sandbox.js
@@ -13,7 +13,12 @@
  * limitations under the License.
  */
 
-import ModuleLoader from "../../external/quickjs/quickjs-eval.js";
+import ModuleLoader from "../external/quickjs/quickjs-eval.js";
+
+/* eslint-disable-next-line no-unused-vars */
+const pdfjsVersion = PDFJSDev.eval("BUNDLE_VERSION");
+/* eslint-disable-next-line no-unused-vars */
+const pdfjsBuild = PDFJSDev.eval("BUNDLE_BUILD");
 
 class Sandbox {
   constructor(module, testMode) {