diff --git a/package.json b/package.json
index 600cc65..a307f0a 100644
--- a/package.json
+++ b/package.json
@@ -82,7 +82,7 @@
     "react-helmet": "^5.2.1"
   },
   "devDependencies": {
-    "@babel/core": "7.6.3",
+    "@babel/core": "7.6.4",
     "@babel/plugin-proposal-class-properties": "7.5.5",
     "@babel/plugin-proposal-optional-chaining": "7.6.0",
     "@babel/plugin-transform-flow-strip-types": "^7.6.3",
diff --git a/yarn.lock b/yarn.lock
index 2cc5d25..d312096 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8,15 +8,15 @@
   dependencies:
     "@babel/highlight" "^7.0.0"
 
-"@babel/core@7.6.3", "@babel/core@^7.6.3":
-  version "7.6.3"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.6.3.tgz#44de824e89eaa089bb12da7337bc9bdff2ab68f9"
-  integrity sha512-QfQ5jTBgXLzJuo7Mo8bZK/ePywmgNRgk/UQykiKwEtZPiFIn8ZqE6jB+AnD1hbB1S2xQyL4//it5vuAUOVAMTw==
+"@babel/core@7.6.4":
+  version "7.6.4"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.6.4.tgz#6ebd9fe00925f6c3e177bb726a188b5f578088ff"
+  integrity sha512-Rm0HGw101GY8FTzpWSyRbki/jzq+/PkNQJ+nSulrdY6gFGOsNseCqD6KHRYe2E+EdzuBdr2pxCp6s4Uk6eJ+XQ==
   dependencies:
     "@babel/code-frame" "^7.5.5"
-    "@babel/generator" "^7.6.3"
+    "@babel/generator" "^7.6.4"
     "@babel/helpers" "^7.6.2"
-    "@babel/parser" "^7.6.3"
+    "@babel/parser" "^7.6.4"
     "@babel/template" "^7.6.0"
     "@babel/traverse" "^7.6.3"
     "@babel/types" "^7.6.3"
@@ -26,7 +26,7 @@
     lodash "^4.17.13"
     resolve "^1.3.2"
     semver "^5.4.1"
-    source-map "^0.6.1"
+    source-map "^0.5.0"
 
 "@babel/core@>=7.2.2", "@babel/core@^7.1.0":
   version "7.5.5"
@@ -48,6 +48,26 @@
     semver "^5.4.1"
     source-map "^0.5.0"
 
+"@babel/core@^7.6.3":
+  version "7.6.3"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.6.3.tgz#44de824e89eaa089bb12da7337bc9bdff2ab68f9"
+  integrity sha512-QfQ5jTBgXLzJuo7Mo8bZK/ePywmgNRgk/UQykiKwEtZPiFIn8ZqE6jB+AnD1hbB1S2xQyL4//it5vuAUOVAMTw==
+  dependencies:
+    "@babel/code-frame" "^7.5.5"
+    "@babel/generator" "^7.6.3"
+    "@babel/helpers" "^7.6.2"
+    "@babel/parser" "^7.6.3"
+    "@babel/template" "^7.6.0"
+    "@babel/traverse" "^7.6.3"
+    "@babel/types" "^7.6.3"
+    convert-source-map "^1.1.0"
+    debug "^4.1.0"
+    json5 "^2.1.0"
+    lodash "^4.17.13"
+    resolve "^1.3.2"
+    semver "^5.4.1"
+    source-map "^0.6.1"
+
 "@babel/generator@^7.0.0", "@babel/generator@^7.4.0", "@babel/generator@^7.5.5":
   version "7.5.5"
   resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.5.5.tgz#873a7f936a3c89491b43536d12245b626664e3cf"
@@ -78,6 +98,16 @@
     lodash "^4.17.13"
     source-map "^0.6.1"
 
+"@babel/generator@^7.6.4":
+  version "7.6.4"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.6.4.tgz#a4f8437287bf9671b07f483b76e3bb731bc97671"
+  integrity sha512-jsBuXkFoZxk0yWLyGI9llT9oiQ2FeTASmRFE32U+aaDTfoE92t78eroO7PTpU/OrYq38hlcDM6vbfLDaOLy+7w==
+  dependencies:
+    "@babel/types" "^7.6.3"
+    jsesc "^2.5.1"
+    lodash "^4.17.13"
+    source-map "^0.5.0"
+
 "@babel/helper-annotate-as-pure@^7.0.0":
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.0.0.tgz#323d39dd0b50e10c7c06ca7d7638e6864d8c5c32"
@@ -276,6 +306,11 @@
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.6.3.tgz#9eff8b9c3eeae16a74d8d4ff30da2bd0d6f0487e"
   integrity sha512-sUZdXlva1dt2Vw2RqbMkmfoImubO0D0gaCrNngV6Hi0DA4x3o4mlrq0tbfY0dZEUIccH8I6wQ4qgEtwcpOR6Qg==
 
+"@babel/parser@^7.6.4":
+  version "7.6.4"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.6.4.tgz#cb9b36a7482110282d5cb6dd424ec9262b473d81"
+  integrity sha512-D8RHPW5qd0Vbyo3qb+YjO5nvUVRTXFLQ/FsDxJU2Nqz4uB5EnUN0ZQSEYpvTIbRuttig1XbHWU5oMeQwQSAA+A==
+
 "@babel/plugin-proposal-async-generator-functions@^7.2.0":
   version "7.2.0"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-async-generator-functions/-/plugin-proposal-async-generator-functions-7.2.0.tgz#b289b306669dce4ad20b0252889a15768c9d417e"