diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -14,7 +14,7 @@
     'differential.pkg.js' => '11a5b750',
     'diffusion.pkg.css' => '3783278d',
     'diffusion.pkg.js' => '5b4010f4',
-    'javelin.pkg.js' => 'ec6c9ac3',
+    'javelin.pkg.js' => 'a10417f3',
     'maniphest.pkg.css' => 'f1887d71',
     'maniphest.pkg.js' => '2fe8af22',
     'rsrc/css/aphront/aphront-bars.css' => '231ac33c',
@@ -178,7 +178,7 @@
     'rsrc/externals/javelin/core/init.js' => 'b88ab49e',
     'rsrc/externals/javelin/core/init_node.js' => 'd7dde471',
     'rsrc/externals/javelin/core/install.js' => '52a92793',
-    'rsrc/externals/javelin/core/util.js' => 'e1d96281',
+    'rsrc/externals/javelin/core/util.js' => '65b0b249',
     'rsrc/externals/javelin/docs/Base.js' => '897bb199',
     'rsrc/externals/javelin/docs/onload.js' => '81fb4862',
     'rsrc/externals/javelin/ext/fx/Color.js' => '7e41274a',
@@ -655,7 +655,7 @@
     'javelin-typeahead-source' => '62e18640',
     'javelin-typeahead-static-source' => 'cdde23f1',
     'javelin-uri' => 'd9a9b862',
-    'javelin-util' => 'e1d96281',
+    'javelin-util' => '65b0b249',
     'javelin-vector' => '403a3dce',
     'javelin-view' => '0f764c35',
     'javelin-view-html' => 'e5b406f9',
diff --git a/webroot/rsrc/externals/javelin/core/util.js b/webroot/rsrc/externals/javelin/core/util.js
--- a/webroot/rsrc/externals/javelin/core/util.js
+++ b/webroot/rsrc/externals/javelin/core/util.js
@@ -49,7 +49,13 @@
  * @group util
  */
 JX.$A = function(object) {
-  return Array.prototype.slice.call(object);
+  // IE8 throws "JScript object expected" when trying to call
+  // Array.prototype.slice on a NodeList, so just copy items one by one here.
+  var r = [];
+  for (var ii = 0; ii < object.length; ii++) {
+    r.push(object[ii]);
+  }
+  return r;
 };