diff --git a/bower.json b/bower.json
index 88a306cc1..7cb0c2503 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.1.375",
+  "version": "1.1.377",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index 35ed60baa..66fb460ff 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 = '1.1.375';
-PDFJS.build = '26b9205';
+PDFJS.version = '1.1.377';
+PDFJS.build = '00b798d';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -18494,11 +18494,11 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
         if (cmap instanceof IdentityCMap) {
           return new IdentityToUnicodeMap(0, 0xFFFF);
         }
-        cmap = cmap.getMap();
+        var map = [];
         // Convert UTF-16BE
         // NOTE: cmap can be a sparse array, so use forEach instead of for(;;)
         // to iterate over all keys.
-        cmap.forEach(function(token, i) {
+        cmap.forEach(function(charCode, token) {
           var str = [];
           for (var k = 0; k < token.length; k += 2) {
             var w1 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1);
@@ -18510,9 +18510,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
             var w2 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1);
             str.push(((w1 & 0x3ff) << 10) + (w2 & 0x3ff) + 0x10000);
           }
-          cmap[i] = String.fromCharCode.apply(String, str);
+          map[charCode] = String.fromCharCode.apply(String, str);
         });
-        return new ToUnicodeMap(cmap);
+        return new ToUnicodeMap(map);
       }
       return null;
     },
diff --git a/build/pdf.js b/build/pdf.js
index f64bee4ef..0a90f4598 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 = '1.1.375';
-PDFJS.build = '26b9205';
+PDFJS.version = '1.1.377';
+PDFJS.build = '00b798d';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index 1587319fb..a61c9f528 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 = '1.1.375';
-PDFJS.build = '26b9205';
+PDFJS.version = '1.1.377';
+PDFJS.build = '00b798d';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -12093,11 +12093,11 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
         if (cmap instanceof IdentityCMap) {
           return new IdentityToUnicodeMap(0, 0xFFFF);
         }
-        cmap = cmap.getMap();
+        var map = [];
         // Convert UTF-16BE
         // NOTE: cmap can be a sparse array, so use forEach instead of for(;;)
         // to iterate over all keys.
-        cmap.forEach(function(token, i) {
+        cmap.forEach(function(charCode, token) {
           var str = [];
           for (var k = 0; k < token.length; k += 2) {
             var w1 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1);
@@ -12109,9 +12109,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
             var w2 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1);
             str.push(((w1 & 0x3ff) << 10) + (w2 & 0x3ff) + 0x10000);
           }
-          cmap[i] = String.fromCharCode.apply(String, str);
+          map[charCode] = String.fromCharCode.apply(String, str);
         });
-        return new ToUnicodeMap(cmap);
+        return new ToUnicodeMap(map);
       }
       return null;
     },
diff --git a/package.json b/package.json
index ae66a9cb6..cf1112216 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.1.375",
+  "version": "1.1.377",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [
     "Mozilla",