diff --git a/scripts/travis b/scripts/travis
index fd83e16bd..11e2380e0 100755
--- a/scripts/travis
+++ b/scripts/travis
@@ -41,7 +41,7 @@ fi
 echo "$TRAVIS_BRANCH" | grep -qvE "^[0-9.]+$" && exit 0; :;
 
 # Install dependencies for release build
-pip install --ignore-installed twine
+pip install --user wheel twine
 
 # Build and install theme and Docker image
 python setup.py build sdist bdist_wheel --universal
diff --git a/yarn.lock b/yarn.lock
index 45efa928d..e4cdf2ad8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -267,6 +267,14 @@ aws4@^1.2.1:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.6.0.tgz#83ef5ca860b2b32e4a0deedee8c771b9db57471e"
 
+babel-code-frame@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-7.0.0-beta.0.tgz#418a7b5f3f7dc9a4670e61b1158b4c5661bec98d"
+  dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^3.0.0"
+
 babel-code-frame@^6.22.0:
   version "6.22.0"
   resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.22.0.tgz#027620bee567a88c32561574e7fd0801d33118e4"
@@ -299,14 +307,14 @@ babel-core@^6.24.1, babel-core@^6.25.0:
     slash "^1.0.0"
     source-map "^0.5.0"
 
-babel-eslint@^7.2.3:
-  version "7.2.3"
-  resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-7.2.3.tgz#b2fe2d80126470f5c19442dc757253a897710827"
+babel-eslint@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-8.0.0.tgz#ce06f385bdfb5b6d7e603f06222f891abd14c240"
   dependencies:
-    babel-code-frame "^6.22.0"
-    babel-traverse "^6.23.1"
-    babel-types "^6.23.0"
-    babylon "^6.17.0"
+    babel-code-frame "7.0.0-beta.0"
+    babel-traverse "7.0.0-beta.0"
+    babel-types "7.0.0-beta.0"
+    babylon "7.0.0-beta.22"
 
 babel-generator@^6.25.0:
   version "6.25.0"
@@ -347,6 +355,15 @@ babel-helper-define-map@^6.24.1:
     babel-types "^6.24.1"
     lodash "^4.2.0"
 
+babel-helper-function-name@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-helper-function-name/-/babel-helper-function-name-7.0.0-beta.0.tgz#d1b6779b647e5c5c31ebeb05e13b998e4d352d56"
+  dependencies:
+    babel-helper-get-function-arity "7.0.0-beta.0"
+    babel-template "7.0.0-beta.0"
+    babel-traverse "7.0.0-beta.0"
+    babel-types "7.0.0-beta.0"
+
 babel-helper-function-name@^6.24.1:
   version "6.24.1"
   resolved "https://registry.yarnpkg.com/babel-helper-function-name/-/babel-helper-function-name-6.24.1.tgz#d3475b8c03ed98242a25b48351ab18399d3580a9"
@@ -357,6 +374,12 @@ babel-helper-function-name@^6.24.1:
     babel-traverse "^6.24.1"
     babel-types "^6.24.1"
 
+babel-helper-get-function-arity@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-helper-get-function-arity/-/babel-helper-get-function-arity-7.0.0-beta.0.tgz#9d1ab7213bb5efe1ef1638a8ea1489969b5a8b6e"
+  dependencies:
+    babel-types "7.0.0-beta.0"
+
 babel-helper-get-function-arity@^6.24.1:
   version "6.24.1"
   resolved "https://registry.yarnpkg.com/babel-helper-get-function-arity/-/babel-helper-get-function-arity-6.24.1.tgz#8f7782aa93407c41d3aa50908f89b031b1b6853d"
@@ -412,6 +435,10 @@ babel-loader@^7.1.1:
     loader-utils "^1.0.2"
     mkdirp "^0.5.1"
 
+babel-messages@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-7.0.0-beta.0.tgz#6df01296e49fc8fbd0637394326a167f36da817b"
+
 babel-messages@^6.23.0:
   version "6.23.0"
   resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-6.23.0.tgz#f3cdf4703858035b2a2951c6ec5edf6c62f2630e"
@@ -683,6 +710,15 @@ babel-runtime@^6.18.0, babel-runtime@^6.22.0:
     core-js "^2.4.0"
     regenerator-runtime "^0.10.0"
 
+babel-template@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-7.0.0-beta.0.tgz#85083cf9e4395d5e48bf5154d7a8d6991cafecfb"
+  dependencies:
+    babel-traverse "7.0.0-beta.0"
+    babel-types "7.0.0-beta.0"
+    babylon "7.0.0-beta.22"
+    lodash "^4.2.0"
+
 babel-template@^6.24.1, babel-template@^6.25.0:
   version "6.25.0"
   resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-6.25.0.tgz#665241166b7c2aa4c619d71e192969552b10c071"
@@ -693,7 +729,21 @@ babel-template@^6.24.1, babel-template@^6.25.0:
     babylon "^6.17.2"
     lodash "^4.2.0"
 
-babel-traverse@^6.23.1, babel-traverse@^6.24.1, babel-traverse@^6.25.0:
+babel-traverse@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-7.0.0-beta.0.tgz#da14be9b762f62a2f060db464eaafdd8cd072a41"
+  dependencies:
+    babel-code-frame "7.0.0-beta.0"
+    babel-helper-function-name "7.0.0-beta.0"
+    babel-messages "7.0.0-beta.0"
+    babel-types "7.0.0-beta.0"
+    babylon "7.0.0-beta.22"
+    debug "^3.0.1"
+    globals "^10.0.0"
+    invariant "^2.2.0"
+    lodash "^4.2.0"
+
+babel-traverse@^6.24.1, babel-traverse@^6.25.0:
   version "6.25.0"
   resolved "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-6.25.0.tgz#2257497e2fcd19b89edc13c4c91381f9512496f1"
   dependencies:
@@ -707,7 +757,15 @@ babel-traverse@^6.23.1, babel-traverse@^6.24.1, babel-traverse@^6.25.0:
     invariant "^2.2.0"
     lodash "^4.2.0"
 
-babel-types@^6.19.0, babel-types@^6.23.0, babel-types@^6.24.1, babel-types@^6.25.0:
+babel-types@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-7.0.0-beta.0.tgz#eb8b6e556470e6dcc4aef982d79ad229469b5169"
+  dependencies:
+    esutils "^2.0.2"
+    lodash "^4.2.0"
+    to-fast-properties "^2.0.0"
+
+babel-types@^6.19.0, babel-types@^6.24.1, babel-types@^6.25.0:
   version "6.25.0"
   resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-6.25.0.tgz#70afb248d5660e5d18f811d91c8303b54134a18e"
   dependencies:
@@ -716,7 +774,11 @@ babel-types@^6.19.0, babel-types@^6.23.0, babel-types@^6.24.1, babel-types@^6.25
     lodash "^4.2.0"
     to-fast-properties "^1.0.1"
 
-babylon@^6.17.0, babylon@^6.17.2:
+babylon@7.0.0-beta.22:
+  version "7.0.0-beta.22"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-7.0.0-beta.22.tgz#74f0ad82ed7c7c3cfeab74cf684f815104161b65"
+
+babylon@^6.17.2:
   version "6.17.3"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.17.3.tgz#1327d709950b558f204e5352587fd0290f8d8e48"
 
@@ -979,7 +1041,7 @@ chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.1:
+chalk@^2.0.0, chalk@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.0.1.tgz#dbec49436d2ae15f536114e76d14656cdbc0f44d"
   dependencies:
@@ -1425,6 +1487,12 @@ debug@^2.1.1:
   dependencies:
     ms "0.7.2"
 
+debug@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.0.1.tgz#0564c612b521dc92d9f2988f0549e34f9c98db64"
+  dependencies:
+    ms "2.0.0"
+
 debug@~2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.2.0.tgz#f87057e995b1a1f6ae6a4960664137bc56f039da"
@@ -2234,6 +2302,10 @@ global-prefix@^0.1.4:
     is-windows "^0.2.0"
     which "^1.2.12"
 
+globals@^10.0.0:
+  version "10.1.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-10.1.0.tgz#4425a1881be0d336b4a823a82a7be725d5dd987c"
+
 globals@^9.0.0, globals@^9.17.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
@@ -5374,6 +5446,10 @@ to-fast-properties@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.2.tgz#f3f5c0c3ba7299a7ef99427e44633257ade43320"
 
+to-fast-properties@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-2.0.0.tgz#dc5e698cbd079265bc73e0377681a4e4e83f616e"
+
 tough-cookie@~2.3.0:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.2.tgz#f081f76e4c85720e6c37a5faced737150d84072a"