diff --git a/bower.json b/bower.json
index 046a89b72..6594a1d22 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.4.143",
+  "version": "1.4.145",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index d33770481..83bd6e66c 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 = '1.4.143';
-var pdfjsBuild = '21ed8ff';
+var pdfjsVersion = '1.4.145';
+var pdfjsBuild = '4a44a2c';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
@@ -34186,9 +34186,8 @@ var OpenTypeFileBuilder = (function OpenTypeFileBuilderClosure() {
         // checksum
         var checksum = 0;
         for (j = tableOffsets[i], jj = tableOffsets[i + 1]; j < jj; j += 4) {
-          var quad = (file[j] << 24) + (file[j + 1] << 16) +
-                     (file[j + 2] << 8) + file[j + 3];
-          checksum = (checksum + quad) | 0;
+          var quad = readUint32(file, j);
+          checksum = (checksum + quad) >>> 0;
         }
         writeInt32(file, offset + 4, checksum);
 
@@ -35029,7 +35028,7 @@ var Font = (function FontClosure() {
       function readTableEntry(file) {
         var tag = bytesToString(file.getBytes(4));
 
-        var checksum = file.getInt32();
+        var checksum = file.getInt32() >>> 0;
         var offset = file.getInt32() >>> 0;
         var length = file.getInt32() >>> 0;
 
diff --git a/build/pdf.js b/build/pdf.js
index 4e241eb3e..ffe703d25 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 = '1.4.143';
-var pdfjsBuild = '21ed8ff';
+var pdfjsVersion = '1.4.145';
+var pdfjsBuild = '4a44a2c';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index 9048bef15..26688209e 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 = '1.4.143';
-var pdfjsBuild = '21ed8ff';
+var pdfjsVersion = '1.4.145';
+var pdfjsBuild = '4a44a2c';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
@@ -26202,9 +26202,8 @@ var OpenTypeFileBuilder = (function OpenTypeFileBuilderClosure() {
         // checksum
         var checksum = 0;
         for (j = tableOffsets[i], jj = tableOffsets[i + 1]; j < jj; j += 4) {
-          var quad = (file[j] << 24) + (file[j + 1] << 16) +
-                     (file[j + 2] << 8) + file[j + 3];
-          checksum = (checksum + quad) | 0;
+          var quad = readUint32(file, j);
+          checksum = (checksum + quad) >>> 0;
         }
         writeInt32(file, offset + 4, checksum);
 
@@ -27045,7 +27044,7 @@ var Font = (function FontClosure() {
       function readTableEntry(file) {
         var tag = bytesToString(file.getBytes(4));
 
-        var checksum = file.getInt32();
+        var checksum = file.getInt32() >>> 0;
         var offset = file.getInt32() >>> 0;
         var length = file.getInt32() >>> 0;
 
diff --git a/package.json b/package.json
index d84e565b3..058703334 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.4.143",
+  "version": "1.4.145",
   "main": "build/pdf.js",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [