diff --git a/backend/package.json b/backend/package.json
index 2833f3e18..0f6430849 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -76,7 +76,7 @@
   },
   "devDependencies": {
     "@babel/cli": "~7.2.3",
-    "@babel/core": "~7.3.4",
+    "@babel/core": "~7.4.0",
     "@babel/node": "~7.2.2",
     "@babel/plugin-proposal-throw-expressions": "^7.2.0",
     "@babel/preset-env": "~7.4.2",
diff --git a/backend/yarn.lock b/backend/yarn.lock
index 7341dbc83..cd2efc741 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -38,18 +38,18 @@
   dependencies:
     "@babel/highlight" "^7.0.0"
 
-"@babel/core@^7.1.0":
-  version "7.3.3"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.3.3.tgz#d090d157b7c5060d05a05acaebc048bd2b037947"
-  integrity sha512-w445QGI2qd0E0GlSnq6huRZWPMmQGCp5gd5ZWS4hagn0EiwzxD5QMFkpchyusAyVC1n27OKXzQ0/88aVU9n4xQ==
+"@babel/core@^7.1.0", "@babel/core@~7.4.0":
+  version "7.4.0"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.4.0.tgz#248fd6874b7d755010bfe61f557461d4f446d9e9"
+  integrity sha512-Dzl7U0/T69DFOTwqz/FJdnOSWS57NpjNfCwMKHABr589Lg8uX1RrlBIJ7L5Dubt/xkLsx0xH5EBFzlBVes1ayA==
   dependencies:
     "@babel/code-frame" "^7.0.0"
-    "@babel/generator" "^7.3.3"
-    "@babel/helpers" "^7.2.0"
-    "@babel/parser" "^7.3.3"
-    "@babel/template" "^7.2.2"
-    "@babel/traverse" "^7.2.2"
-    "@babel/types" "^7.3.3"
+    "@babel/generator" "^7.4.0"
+    "@babel/helpers" "^7.4.0"
+    "@babel/parser" "^7.4.0"
+    "@babel/template" "^7.4.0"
+    "@babel/traverse" "^7.4.0"
+    "@babel/types" "^7.4.0"
     convert-source-map "^1.1.0"
     debug "^4.1.0"
     json5 "^2.1.0"
@@ -58,49 +58,7 @@
     semver "^5.4.1"
     source-map "^0.5.0"
 
-"@babel/core@~7.3.4":
-  version "7.3.4"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.3.4.tgz#921a5a13746c21e32445bf0798680e9d11a6530b"
-  integrity sha512-jRsuseXBo9pN197KnDwhhaaBzyZr2oIcLHHTt2oDdQrej5Qp57dCCJafWx5ivU8/alEYDpssYqv1MUqcxwQlrA==
-  dependencies:
-    "@babel/code-frame" "^7.0.0"
-    "@babel/generator" "^7.3.4"
-    "@babel/helpers" "^7.2.0"
-    "@babel/parser" "^7.3.4"
-    "@babel/template" "^7.2.2"
-    "@babel/traverse" "^7.3.4"
-    "@babel/types" "^7.3.4"
-    convert-source-map "^1.1.0"
-    debug "^4.1.0"
-    json5 "^2.1.0"
-    lodash "^4.17.11"
-    resolve "^1.3.2"
-    semver "^5.4.1"
-    source-map "^0.5.0"
-
-"@babel/generator@^7.0.0", "@babel/generator@^7.2.2", "@babel/generator@^7.3.3":
-  version "7.3.3"
-  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.3.3.tgz#185962ade59a52e00ca2bdfcfd1d58e528d4e39e"
-  integrity sha512-aEADYwRRZjJyMnKN7llGIlircxTCofm3dtV5pmY6ob18MSIuipHpA2yZWkPlycwu5HJcx/pADS3zssd8eY7/6A==
-  dependencies:
-    "@babel/types" "^7.3.3"
-    jsesc "^2.5.1"
-    lodash "^4.17.11"
-    source-map "^0.5.0"
-    trim-right "^1.0.1"
-
-"@babel/generator@^7.3.4":
-  version "7.3.4"
-  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.3.4.tgz#9aa48c1989257877a9d971296e5b73bfe72e446e"
-  integrity sha512-8EXhHRFqlVVWXPezBW5keTiQi/rJMQTg/Y9uVCEZ0CAF3PKtCCaVRnp64Ii1ujhkoDhhF1fVsImoN4yJ2uz4Wg==
-  dependencies:
-    "@babel/types" "^7.3.4"
-    jsesc "^2.5.1"
-    lodash "^4.17.11"
-    source-map "^0.5.0"
-    trim-right "^1.0.1"
-
-"@babel/generator@^7.4.0":
+"@babel/generator@^7.0.0", "@babel/generator@^7.4.0":
   version "7.4.0"
   resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.4.0.tgz#c230e79589ae7a729fd4631b9ded4dc220418196"
   integrity sha512-/v5I+a1jhGSKLgZDcmAUZ4K/VePi43eRkUs3yePW1HB1iANOD5tqJXwGSG4BZhSksP8J9ejSlwGeTiiOFZOrXQ==
@@ -283,14 +241,14 @@
     "@babel/traverse" "^7.1.0"
     "@babel/types" "^7.2.0"
 
-"@babel/helpers@^7.2.0":
-  version "7.2.0"
-  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.2.0.tgz#8335f3140f3144270dc63c4732a4f8b0a50b7a21"
-  integrity sha512-Fr07N+ea0dMcMN8nFpuK6dUIT7/ivt9yKQdEEnjVS83tG2pHwPi03gYmk/tyuwONnZ+sY+GFFPlWGgCtW1hF9A==
+"@babel/helpers@^7.4.0":
+  version "7.4.2"
+  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.4.2.tgz#3bdfa46a552ca77ef5a0f8551be5f0845ae989be"
+  integrity sha512-gQR1eQeroDzFBikhrCccm5Gs2xBjZ57DNjGbqTaHo911IpmSxflOQWMAHPw/TXk8L3isv7s9lYzUkexOeTQUYg==
   dependencies:
-    "@babel/template" "^7.1.2"
-    "@babel/traverse" "^7.1.5"
-    "@babel/types" "^7.2.0"
+    "@babel/template" "^7.4.0"
+    "@babel/traverse" "^7.4.0"
+    "@babel/types" "^7.4.0"
 
 "@babel/highlight@^7.0.0":
   version "7.0.0"
@@ -312,17 +270,7 @@
     lodash "^4.17.10"
     v8flags "^3.1.1"
 
-"@babel/parser@^7.0.0", "@babel/parser@^7.2.2", "@babel/parser@^7.2.3", "@babel/parser@^7.3.3":
-  version "7.3.3"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.3.3.tgz#092d450db02bdb6ccb1ca8ffd47d8774a91aef87"
-  integrity sha512-xsH1CJoln2r74hR+y7cg2B5JCPaTh+Hd+EbBRk9nWGSNspuo6krjhX0Om6RnRQuIvFq8wVXCLKH3kwKDYhanSg==
-
-"@babel/parser@^7.1.0", "@babel/parser@^7.3.4":
-  version "7.3.4"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.3.4.tgz#a43357e4bbf4b92a437fb9e465c192848287f27c"
-  integrity sha512-tXZCqWtlOOP4wgCp6RjRvLmfuhnqTLy9VHwRochJBCP2nDm27JnnuFEnXFASVyQNHk36jD1tAammsCEEqgscIQ==
-
-"@babel/parser@^7.4.0":
+"@babel/parser@^7.0.0", "@babel/parser@^7.1.0", "@babel/parser@^7.4.0":
   version "7.4.2"
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.4.2.tgz#b4521a400cb5a871eab3890787b4bc1326d38d91"
   integrity sha512-9fJTDipQFvlfSVdD/JBtkiY0br9BtfvW2R8wo6CX/Ej2eMuV0gWPk1M67Mt3eggQvBqYW1FCEk8BN7WvGm/g5g==
@@ -720,46 +668,16 @@
   dependencies:
     regenerator-runtime "^0.13.2"
 
-"@babel/template@^7.0.0", "@babel/template@^7.1.0", "@babel/template@^7.1.2", "@babel/template@^7.2.2":
-  version "7.2.2"
-  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.2.2.tgz#005b3fdf0ed96e88041330379e0da9a708eb2907"
-  integrity sha512-zRL0IMM02AUDwghf5LMSSDEz7sBCO2YnNmpg3uWTZj/v1rcG2BmQUvaGU8GhU8BvfMh1k2KIAYZ7Ji9KXPUg7g==
+"@babel/template@^7.0.0", "@babel/template@^7.1.0", "@babel/template@^7.4.0":
+  version "7.4.0"
+  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.4.0.tgz#12474e9c077bae585c5d835a95c0b0b790c25c8b"
+  integrity sha512-SOWwxxClTTh5NdbbYZ0BmaBVzxzTh2tO/TeLTbF6MO6EzVhHTnff8CdBXx3mEtazFBoysmEM6GU/wF+SuSx4Fw==
   dependencies:
     "@babel/code-frame" "^7.0.0"
-    "@babel/parser" "^7.2.2"
-    "@babel/types" "^7.2.2"
+    "@babel/parser" "^7.4.0"
+    "@babel/types" "^7.4.0"
 
-"@babel/traverse@^7.0.0", "@babel/traverse@^7.1.0", "@babel/traverse@^7.1.5", "@babel/traverse@^7.2.2":
-  version "7.2.3"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.2.3.tgz#7ff50cefa9c7c0bd2d81231fdac122f3957748d8"
-  integrity sha512-Z31oUD/fJvEWVR0lNZtfgvVt512ForCTNKYcJBGbPb1QZfve4WGH8Wsy7+Mev33/45fhP/hwQtvgusNdcCMgSw==
-  dependencies:
-    "@babel/code-frame" "^7.0.0"
-    "@babel/generator" "^7.2.2"
-    "@babel/helper-function-name" "^7.1.0"
-    "@babel/helper-split-export-declaration" "^7.0.0"
-    "@babel/parser" "^7.2.3"
-    "@babel/types" "^7.2.2"
-    debug "^4.1.0"
-    globals "^11.1.0"
-    lodash "^4.17.10"
-
-"@babel/traverse@^7.3.4":
-  version "7.3.4"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.3.4.tgz#1330aab72234f8dea091b08c4f8b9d05c7119e06"
-  integrity sha512-TvTHKp6471OYEcE/91uWmhR6PrrYywQntCHSaZ8CM8Vmp+pjAusal4nGB2WCCQd0rvI7nOMKn9GnbcvTUz3/ZQ==
-  dependencies:
-    "@babel/code-frame" "^7.0.0"
-    "@babel/generator" "^7.3.4"
-    "@babel/helper-function-name" "^7.1.0"
-    "@babel/helper-split-export-declaration" "^7.0.0"
-    "@babel/parser" "^7.3.4"
-    "@babel/types" "^7.3.4"
-    debug "^4.1.0"
-    globals "^11.1.0"
-    lodash "^4.17.11"
-
-"@babel/traverse@^7.4.0":
+"@babel/traverse@^7.0.0", "@babel/traverse@^7.1.0", "@babel/traverse@^7.4.0":
   version "7.4.0"
   resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.4.0.tgz#14006967dd1d2b3494cdd650c686db9daf0ddada"
   integrity sha512-/DtIHKfyg2bBKnIN+BItaIlEg5pjAnzHOIQe5w+rHAw/rg9g0V7T4rqPX8BJPfW11kt3koyjAnTNwCzb28Y1PA==
@@ -774,7 +692,7 @@
     globals "^11.1.0"
     lodash "^4.17.11"
 
-"@babel/types@^7.0.0", "@babel/types@^7.2.0", "@babel/types@^7.2.2", "@babel/types@^7.3.0", "@babel/types@^7.3.3", "@babel/types@^7.3.4", "@babel/types@^7.4.0":
+"@babel/types@^7.0.0", "@babel/types@^7.2.0", "@babel/types@^7.3.0", "@babel/types@^7.4.0":
   version "7.4.0"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.4.0.tgz#670724f77d24cce6cc7d8cf64599d511d164894c"
   integrity sha512-aPvkXyU2SPOnztlgo8n9cEiXW755mgyvueUPcpStqdzoSPm0fjO0vQBjLkt3JKJW7ufikfcnMTTPsN1xaTsBPA==