diff --git a/bower.json b/bower.json
index f003c7b69..6876c04b1 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.4.79",
+  "version": "1.4.81",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index b040b741b..870f94415 100644
--- a/build/pdf.combined.js
+++ b/build/pdf.combined.js
@@ -28,8 +28,8 @@ factory((root.pdfjsDistBuildPdfCombined = {}));
   // Use strict in our context only - users might not want it
   'use strict';
 
-var pdfjsVersion = '1.4.79';
-var pdfjsBuild = '9eedfc1';
+var pdfjsVersion = '1.4.81';
+var pdfjsBuild = '8cdb696';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
@@ -1615,7 +1615,18 @@ var JpegImage = (function jpegImage() {
       // type of data: Uint8Array(width * height * numComponents)
       var data = this._getLinearizedBlockData(width, height);
 
-      if (this.numComponents === 3) {
+      if (this.numComponents === 1 && forceRGBoutput) {
+        var dataLength = data.length;
+        var rgbData = new Uint8Array(dataLength * 3);
+        var offset = 0;
+        for (var i = 0; i < dataLength; i++) {
+          var grayColor = data[i];
+          rgbData[offset++] = grayColor;
+          rgbData[offset++] = grayColor;
+          rgbData[offset++] = grayColor;
+        }
+        return rgbData;
+      } else if (this.numComponents === 3) {
         return this._convertYccToRgb(data);
       } else if (this.numComponents === 4) {
         if (this._isColorConversionNeeded()) {
diff --git a/build/pdf.js b/build/pdf.js
index 39a6a1421..9eed7094b 100644
--- a/build/pdf.js
+++ b/build/pdf.js
@@ -28,8 +28,8 @@ factory((root.pdfjsDistBuildPdf = {}));
   // Use strict in our context only - users might not want it
   'use strict';
 
-var pdfjsVersion = '1.4.79';
-var pdfjsBuild = '9eedfc1';
+var pdfjsVersion = '1.4.81';
+var pdfjsBuild = '8cdb696';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index 256ffe8b5..c554c0c30 100644
--- a/build/pdf.worker.js
+++ b/build/pdf.worker.js
@@ -28,8 +28,8 @@ factory((root.pdfjsDistBuildPdfWorker = {}));
   // Use strict in our context only - users might not want it
   'use strict';
 
-var pdfjsVersion = '1.4.79';
-var pdfjsBuild = '9eedfc1';
+var pdfjsVersion = '1.4.81';
+var pdfjsBuild = '8cdb696';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
@@ -1615,7 +1615,18 @@ var JpegImage = (function jpegImage() {
       // type of data: Uint8Array(width * height * numComponents)
       var data = this._getLinearizedBlockData(width, height);
 
-      if (this.numComponents === 3) {
+      if (this.numComponents === 1 && forceRGBoutput) {
+        var dataLength = data.length;
+        var rgbData = new Uint8Array(dataLength * 3);
+        var offset = 0;
+        for (var i = 0; i < dataLength; i++) {
+          var grayColor = data[i];
+          rgbData[offset++] = grayColor;
+          rgbData[offset++] = grayColor;
+          rgbData[offset++] = grayColor;
+        }
+        return rgbData;
+      } else if (this.numComponents === 3) {
         return this._convertYccToRgb(data);
       } else if (this.numComponents === 4) {
         if (this._isColorConversionNeeded()) {
diff --git a/package.json b/package.json
index 69e1bb319..83fc19cc1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.4.79",
+  "version": "1.4.81",
   "main": "build/pdf.js",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [