diff --git a/sources/web/datalab/polymer/bower.json b/sources/web/datalab/polymer/bower.json
index c271b0571..469f1d2fb 100644
--- a/sources/web/datalab/polymer/bower.json
+++ b/sources/web/datalab/polymer/bower.json
@@ -28,7 +28,8 @@
     "polymer-decorators": "Polymer/polymer-decorators#^0.1.2",
     "socket.io-client": "^2.0.3",
     "webcomponentsjs": "webcomponents/webcomponentsjs#^1.0.0-rc.9",
-    "xterm.js": "^2.7.0"
+    "xterm.js": "^2.7.0",
+    "web-animations-js": "^2.3.1"
   },
   "devDependencies": {
     "web-component-tester": "^6.5.0"
diff --git a/sources/web/datalab/polymer/package-lock.json b/sources/web/datalab/polymer/package-lock.json
index eb8488901..b99a81ef2 100644
--- a/sources/web/datalab/polymer/package-lock.json
+++ b/sources/web/datalab/polymer/package-lock.json
@@ -3114,7 +3114,6 @@
           "requires": {
             "anymatch": "1.3.2",
             "async-each": "1.0.1",
-            "fsevents": "1.1.3",
             "glob-parent": "2.0.0",
             "inherits": "2.0.3",
             "is-binary-path": "1.0.1",
@@ -4868,11 +4867,6 @@
           "version": "1.1.3",
           "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.1.3.tgz",
           "integrity": "sha512-WIr7iDkdmdbxu/Gh6eKEZJL6KPE74/5MEsf2whTOFNxbIoIixogroLdKYqB6FDav4Wavh/lZdzzd3b2KxIXC5Q==",
-          "optional": true,
-          "requires": {
-            "nan": "2.8.0",
-            "node-pre-gyp": "0.6.39"
-          },
           "dependencies": {
             "abbrev": {
               "version": "1.1.0",
@@ -8527,8 +8521,7 @@
         "nan": {
           "version": "2.8.0",
           "resolved": "https://registry.npmjs.org/nan/-/nan-2.8.0.tgz",
-          "integrity": "sha1-7XFfP+neArV6XmJS2QqWZ14fCFo=",
-          "optional": true
+          "integrity": "sha1-7XFfP+neArV6XmJS2QqWZ14fCFo="
         },
         "nanomatch": {
           "version": "1.2.7",