diff --git a/ConferenceSample/package-lock.json b/ConferenceSample/package-lock.json
index 8048d6c49..c4f704b95 100644
--- a/ConferenceSample/package-lock.json
+++ b/ConferenceSample/package-lock.json
@@ -689,6 +689,7 @@
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "kind-of": "3.2.2",
         "longest": "1.0.1",
@@ -700,6 +701,7 @@
           "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
           "dev": true,
+          "optional": true,
           "requires": {
             "is-buffer": "1.1.6"
           }
@@ -3166,7 +3168,8 @@
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -3184,11 +3187,13 @@
         },
         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
+          "optional": true,
           "requires": {
             "balanced-match": "1.0.0",
             "concat-map": "0.0.1"
@@ -3201,15 +3206,18 @@
         },
         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -3312,7 +3320,8 @@
         },
         "inherits": {
           "version": "2.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -3322,6 +3331,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -3334,17 +3344,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.11"
           }
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "5.1.1",
             "yallist": "3.0.2"
@@ -3361,6 +3374,7 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -3433,7 +3447,8 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -3443,6 +3458,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -3518,7 +3534,8 @@
         },
         "safe-buffer": {
           "version": "5.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3548,6 +3565,7 @@
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
             "is-fullwidth-code-point": "1.0.0",
@@ -3565,6 +3583,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -3603,11 +3622,13 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         }
       }
     },
@@ -5855,7 +5876,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "loose-envify": {
       "version": "1.4.0",
@@ -7080,6 +7102,7 @@
     },
     "react-native-tab-view": {
       "version": "github:react-navigation/react-native-tab-view#36ebd834d78b841fc19778c966465d02fd1213bb",
+      "from": "github:react-navigation/react-native-tab-view#36ebd834d78b841fc19778c966465d02fd1213bb",
       "requires": {
         "prop-types": "15.6.2"
       }
@@ -8255,6 +8278,13 @@
       "integrity": "sha512-MYlkNnxbg6v6jP/aPLmMoxjrfxTls3jxHwW0jugccKF7vp6Ekq3IluqBkg86B6dURXdUaHNVQ8OvYw3kDdzMSg==",
       "requires": {
         "underscore": "1.9.1"
+      },
+      "dependencies": {
+        "underscore": {
+          "version": "1.9.1",
+          "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.9.1.tgz",
+          "integrity": "sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg=="
+        }
       }
     },
     "strip-ansi": {
@@ -8909,9 +8939,9 @@
       "integrity": "sha1-rOEWq1V80Zc4ak6I9GhTeMiy5Po="
     },
     "underscore": {
-      "version": "1.9.1",
-      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.9.1.tgz",
-      "integrity": "sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg=="
+      "version": "1.12.1",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.12.1.tgz",
+      "integrity": "sha512-hEQt0+ZLDVUMhebKxL4x1BTtDY7bavVofhZ9KZ4aI26X9SRaE+Y3m83XUL1UP2jn8ynjndwCCpEHdUG+9pP1Tw=="
     },
     "union-value": {
       "version": "1.0.0",
diff --git a/ConferenceSample/package.json b/ConferenceSample/package.json
index 95c48db1b..a0268ed7e 100644
--- a/ConferenceSample/package.json
+++ b/ConferenceSample/package.json
@@ -11,7 +11,7 @@
     "react-native": "0.55.4",
     "react-navigation": "^1.5.11",
     "stringee-react-native": "^1.1.8",
-    "underscore": "^1.9.1"
+    "underscore": "^1.12.1"
   },
   "devDependencies": {
     "babel-jest": "23.4.2",
diff --git a/ConferenceSample/yarn.lock b/ConferenceSample/yarn.lock
index 8544eaf72..f66e0212c 100644
--- a/ConferenceSample/yarn.lock
+++ b/ConferenceSample/yarn.lock
@@ -1478,6 +1478,10 @@ ci-info@^1.0.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.1.3.tgz#710193264bb05c77b8c90d02f5aaf22216a667b2"
 
+clamp@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/clamp/-/clamp-1.0.1.tgz#66a0e64011816e37196828fdc8c8c147312c8634"
+
 class-utils@^0.3.5:
   version "0.3.6"
   resolved "https://registry.yarnpkg.com/class-utils/-/class-utils-0.3.6.tgz#f93369ae8b9a7ce02fd41faad0ca83033190c463"
@@ -2388,6 +2392,10 @@ has@^1.0.1:
   dependencies:
     function-bind "^1.1.1"
 
+hoist-non-react-statics@^2.2.0, hoist-non-react-statics@^2.3.1:
+  version "2.5.5"
+  resolved "https://registry.yarnpkg.com/hoist-non-react-statics/-/hoist-non-react-statics-2.5.5.tgz#c5903cf409c0dfd908f388e619d86b9c1174cb47"
+
 home-or-tmp@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-2.0.0.tgz#e36c3f2d2cae7d746a857e38d18d5f32a7882db8"
@@ -2679,6 +2687,10 @@ is-windows@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
 
+isarray@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
+
 isarray@1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -3324,7 +3336,7 @@ longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
+loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1, loose-envify@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
   dependencies:
@@ -3979,6 +3991,12 @@ path-parse@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.5.tgz#3c1adf871ea9cd6c9431b6ea2bd74a0ff055c4c1"
 
+path-to-regexp@^1.7.0:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.8.0.tgz#887b3ba9d84393e87a0a0b9f4cb756198b53548a"
+  dependencies:
+    isarray "0.0.1"
+
 path-type@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-1.1.0.tgz#59c44f7ee491da704da415da5a4070ba4f8fe441"
@@ -4110,6 +4128,14 @@ prompts@^0.1.9:
     kleur "^2.0.1"
     sisteransi "^0.1.1"
 
+prop-types@^15.5.10, prop-types@^15.6.2:
+  version "15.7.2"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
+  dependencies:
+    loose-envify "^1.4.0"
+    object-assign "^4.1.1"
+    react-is "^16.8.1"
+
 prop-types@^15.5.8, prop-types@^15.6.0:
   version "15.6.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.2.tgz#05d5ca77b4453e985d60fc7ff8c859094a497102"
@@ -4177,6 +4203,43 @@ react-is@^16.3.1:
   version "16.4.2"
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.4.2.tgz#84891b56c2b6d9efdee577cc83501dfc5ecead88"
 
+react-is@^16.8.1:
+  version "16.13.1"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
+
+react-lifecycles-compat@^3.0.2:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz#4f1a273afdfc8f3488a8c516bfda78f872352362"
+
+react-native-dismiss-keyboard@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/react-native-dismiss-keyboard/-/react-native-dismiss-keyboard-1.0.0.tgz#32886242b3f2317e121f3aeb9b0a585e2b879b49"
+
+react-native-drawer-layout-polyfill@^1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/react-native-drawer-layout-polyfill/-/react-native-drawer-layout-polyfill-1.3.2.tgz#192c84d7a5a6b8a6d2be2c7daa5e4164518d0cc7"
+  dependencies:
+    react-native-drawer-layout "1.3.2"
+
+react-native-drawer-layout@1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/react-native-drawer-layout/-/react-native-drawer-layout-1.3.2.tgz#b9740d7663a1dc4f88a61b9c6d93d2d948ea426e"
+  dependencies:
+    react-native-dismiss-keyboard "1.0.0"
+
+react-native-safe-area-view@0.11.0:
+  version "0.11.0"
+  resolved "https://registry.yarnpkg.com/react-native-safe-area-view/-/react-native-safe-area-view-0.11.0.tgz#4f3dda43c2bace37965e7c6aef5fc83d4f19d174"
+  dependencies:
+    hoist-non-react-statics "^2.3.1"
+
+"react-native-tab-view@github:react-navigation/react-native-tab-view":
+  version "0.0.74"
+  uid d87a5cb3ddbcb9e5ea1651450f6c12a7f41355df
+  resolved "https://codeload.github.com/react-navigation/react-native-tab-view/tar.gz/d87a5cb3ddbcb9e5ea1651450f6c12a7f41355df"
+  dependencies:
+    prop-types "^15.6.0"
+
 react-native@0.55.4:
   version "0.55.4"
   resolved "https://registry.yarnpkg.com/react-native/-/react-native-0.55.4.tgz#eecffada3750a928e2ddd07cf11d857ae9751c30"
@@ -4241,6 +4304,19 @@ react-native@0.55.4:
     xmldoc "^0.4.0"
     yargs "^9.0.0"
 
+react-navigation@^1.5.11:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/react-navigation/-/react-navigation-1.6.1.tgz#f08b560637edb5517f375bbd9bae3123e3027206"
+  dependencies:
+    clamp "^1.0.1"
+    hoist-non-react-statics "^2.2.0"
+    path-to-regexp "^1.7.0"
+    prop-types "^15.5.10"
+    react-lifecycles-compat "^3.0.2"
+    react-native-drawer-layout-polyfill "^1.3.2"
+    react-native-safe-area-view "0.11.0"
+    react-native-tab-view "github:react-navigation/react-native-tab-view"
+
 react-proxy@^1.1.7:
   version "1.1.8"
   resolved "https://registry.yarnpkg.com/react-proxy/-/react-proxy-1.1.8.tgz#9dbfd9d927528c3aa9f444e4558c37830ab8c26a"
@@ -4268,14 +4344,13 @@ react-transform-hmr@^1.0.4:
     global "^4.3.0"
     react-proxy "^1.1.7"
 
-react@16.3.1:
-  version "16.3.1"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.3.1.tgz#4a2da433d471251c69b6033ada30e2ed1202cfd8"
+react@^16.3.1:
+  version "16.14.0"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.14.0.tgz#94d776ddd0aaa37da3eda8fc5b6b18a4c9a3114d"
   dependencies:
-    fbjs "^0.8.16"
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
-    prop-types "^15.6.0"
+    prop-types "^15.6.2"
 
 read-pkg-up@^1.0.1:
   version "1.0.1"
@@ -4849,6 +4924,12 @@ string_decoder@~1.1.1:
   dependencies:
     safe-buffer "~5.1.0"
 
+stringee-react-native@^1.1.8:
+  version "1.3.14"
+  resolved "https://registry.yarnpkg.com/stringee-react-native/-/stringee-react-native-1.3.14.tgz#a884e312d83a5177818fd468a022b6388eeb7329"
+  dependencies:
+    underscore "^1.8.3"
+
 strip-ansi@^3.0.0, strip-ansi@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
@@ -5062,6 +5143,14 @@ ultron@~1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.1.1.tgz#9fe1536a10a664a65266a1e3ccf85fd36302bc9c"
 
+underscore@^1.12.1:
+  version "1.12.1"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.12.1.tgz#7bb8cc9b3d397e201cf8553336d262544ead829e"
+
+underscore@^1.8.3:
+  version "1.13.1"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.13.1.tgz#0c1c6bd2df54b6b69f2314066d65b6cde6fcf9d1"
+
 union-value@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/union-value/-/union-value-1.0.0.tgz#5c71c34cb5bad5dcebe3ea0cd08207ba5aa1aea4"