diff --git a/app/directives/pdf.ts b/app/directives/pdf.ts
index 70cee367..7a58fae2 100644
--- a/app/directives/pdf.ts
+++ b/app/directives/pdf.ts
@@ -223,11 +223,14 @@ export default function(app) {
           container: this.element[0],
           textContent: this.textContent,
           viewport,
+          enhanceTextSelection: true,
         });
 
         // wait for renderTask
         await this.renderTask;
 
+        this.renderTask.expandTextDivs(true);
+
         // normalize the DOM subtree of the rendered page
         // (otherwise serialized ranges may be based on different DOM states)
         this.element[0].normalize();
diff --git a/gulpfile.js b/gulpfile.js
index 3bc71cae..77601acd 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -157,7 +157,7 @@ gulp.task('vendor', [], function() {
   var mathjax = gulp.src(mathjaxSrc, {base: mathjaxBase})
     .pipe(gulp.dest(buildDir + '/assets/mathjax'));
 
-  var pdfjs = gulp.src('jspm_packages/github/mozilla/pdfjs-dist@1.5.389/build/pdf.worker.js')
+  var pdfjs = gulp.src('jspm_packages/github/mozilla/pdfjs-dist@1.5.415/build/pdf.worker.js')
     .pipe(dev ? gutil.noop() : streamify(uglify({
       // disable compression, otherwise pdf rendering fails!
       // see https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#minified
diff --git a/jspm.config.js b/jspm.config.js
index c734a1ef..83d46046 100644
--- a/jspm.config.js
+++ b/jspm.config.js
@@ -79,10 +79,11 @@ SystemJS.config({
     "kramed": "npm:kramed@0.5.6",
     "leaflet": "github:Leaflet/Leaflet@0.7.7",
     "lodash": "npm:lodash@4.15.0",
+    "mozilla/pdfjs-dist": "github:mozilla/pdfjs-dist@1.5.415",
     "os": "github:jspm/nodelibs-os@0.2.0-alpha",
     "paperhive-sources": "npm:paperhive-sources@4.0.2",
     "path": "github:jspm/nodelibs-path@0.2.0-alpha",
-    "pdfjs-dist": "github:mozilla/pdfjs-dist@1.5.389",
+    "pdfjs-dist": "github:mozilla/pdfjs-dist@1.5.415",
     "process": "github:jspm/nodelibs-process@0.2.0-alpha",
     "rangy": "github:timdown/rangy-release@1.3.0",
     "readline": "github:jspm/nodelibs-readline@0.2.0-alpha",
diff --git a/package.json b/package.json
index 0dd5c82f..c8bf4a76 100644
--- a/package.json
+++ b/package.json
@@ -88,6 +88,7 @@
       "angular-sanitize": "github:angular/bower-angular-sanitize@^1.5.8",
       "jquery": "npm:jquery@^3.1.0",
       "lodash": "npm:lodash@^4.15.0",
+      "mozilla/pdfjs-dist": "github:mozilla/pdfjs-dist@^1.5.415",
       "paperhive-sources": "npm:paperhive-sources@^4.0.2",
       "pdfjs-dist": "github:mozilla/pdfjs-dist@^1.5.389",
       "rangy": "github:timdown/rangy-release@^1.3.0",
@@ -188,7 +189,7 @@
           }
         }
       },
-      "github:mozilla/pdfjs-dist@1.5.389": {
+      "github:mozilla/pdfjs-dist@1.5.415": {
         "meta": {
           "web/compatibility.js": {
             "format": "global"