diff --git a/bower.json b/bower.json
index d2314907e..3b1c51277 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.1.392",
+  "version": "1.1.394",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index 9fa3f485c..07e327c60 100644
--- a/build/pdf.combined.js
+++ b/build/pdf.combined.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.1.392';
-PDFJS.build = 'c56dc9a';
+PDFJS.version = '1.1.394';
+PDFJS.build = 'ede5235';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -1508,6 +1508,10 @@ function MessageHandler(name, comObj) {
             data: result
           });
         }, function (reason) {
+          if (reason instanceof Error) {
+            // Serialize error to avoid "DataCloneError"
+            reason = reason + '';
+          }
           comObj.postMessage({
             isReply: true,
             callbackId: data.callbackId,
diff --git a/build/pdf.js b/build/pdf.js
index db3972478..c17efbed6 100644
--- a/build/pdf.js
+++ b/build/pdf.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.1.392';
-PDFJS.build = 'c56dc9a';
+PDFJS.version = '1.1.394';
+PDFJS.build = 'ede5235';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -1508,6 +1508,10 @@ function MessageHandler(name, comObj) {
             data: result
           });
         }, function (reason) {
+          if (reason instanceof Error) {
+            // Serialize error to avoid "DataCloneError"
+            reason = reason + '';
+          }
           comObj.postMessage({
             isReply: true,
             callbackId: data.callbackId,
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index a9035bada..119a168bc 100644
--- a/build/pdf.worker.js
+++ b/build/pdf.worker.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.1.392';
-PDFJS.build = 'c56dc9a';
+PDFJS.version = '1.1.394';
+PDFJS.build = 'ede5235';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -1508,6 +1508,10 @@ function MessageHandler(name, comObj) {
             data: result
           });
         }, function (reason) {
+          if (reason instanceof Error) {
+            // Serialize error to avoid "DataCloneError"
+            reason = reason + '';
+          }
           comObj.postMessage({
             isReply: true,
             callbackId: data.callbackId,
diff --git a/package.json b/package.json
index 11f80e946..d46af20c9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.1.392",
+  "version": "1.1.394",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [
     "Mozilla",