diff --git a/bower.json b/bower.json
index b665ebac7..28760b357 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.4.53",
+  "version": "1.4.55",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index b4d23fb5b..5b4375887 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 = '1.4.53';
-var pdfjsBuild = '33b57d7';
+var pdfjsVersion = '1.4.55';
+var pdfjsBuild = 'acf74d4';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
diff --git a/build/pdf.js b/build/pdf.js
index 90b7176ac..36d59e63f 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 = '1.4.53';
-var pdfjsBuild = '33b57d7';
+var pdfjsVersion = '1.4.55';
+var pdfjsBuild = 'acf74d4';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index 0607ce89e..75c9e90ea 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 = '1.4.53';
-var pdfjsBuild = '33b57d7';
+var pdfjsVersion = '1.4.55';
+var pdfjsBuild = 'acf74d4';
 
   var pdfjsFilePath =
     typeof document !== 'undefined' && document.currentScript ?
diff --git a/package.json b/package.json
index c73c5d750..fd5a8bbc2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.4.53",
+  "version": "1.4.55",
   "main": "build/pdf.js",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [