diff --git a/backend/package.json b/backend/package.json
index 49c65869f..f82d91dc0 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -87,7 +87,7 @@
     "@babel/core": "~7.5.4",
     "@babel/node": "~7.5.5",
     "@babel/plugin-proposal-throw-expressions": "^7.2.0",
-    "@babel/preset-env": "~7.5.4",
+    "@babel/preset-env": "~7.5.5",
     "@babel/register": "~7.5.5",
     "apollo-server-testing": "~2.7.0",
     "babel-core": "~7.0.0-0",
diff --git a/backend/yarn.lock b/backend/yarn.lock
index 600d2344e..ac4de5313 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -38,6 +38,13 @@
   dependencies:
     "@babel/highlight" "^7.0.0"
 
+"@babel/code-frame@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.5.5.tgz#bc0782f6d69f7b7d49531219699b988f669a8f9d"
+  integrity sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==
+  dependencies:
+    "@babel/highlight" "^7.0.0"
+
 "@babel/core@^7.1.0", "@babel/core@~7.5.4":
   version "7.5.4"
   resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.5.4.tgz#4c32df7ad5a58e9ea27ad025c11276324e0b4ddd"
@@ -69,6 +76,17 @@
     source-map "^0.5.0"
     trim-right "^1.0.1"
 
+"@babel/generator@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.5.5.tgz#873a7f936a3c89491b43536d12245b626664e3cf"
+  integrity sha512-ETI/4vyTSxTzGnU2c49XHv2zhExkv9JHLTwDAFz85kmcwuShvYG2H08FwgIguQf4JC75CBnXAUM5PqeF4fj0nQ==
+  dependencies:
+    "@babel/types" "^7.5.5"
+    jsesc "^2.5.1"
+    lodash "^4.17.13"
+    source-map "^0.5.0"
+    trim-right "^1.0.1"
+
 "@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"
@@ -93,14 +111,14 @@
     "@babel/traverse" "^7.4.4"
     "@babel/types" "^7.4.4"
 
-"@babel/helper-define-map@^7.4.4":
-  version "7.4.4"
-  resolved "https://registry.yarnpkg.com/@babel/helper-define-map/-/helper-define-map-7.4.4.tgz#6969d1f570b46bdc900d1eba8e5d59c48ba2c12a"
-  integrity sha512-IX3Ln8gLhZpSuqHJSnTNBWGDE9kdkTEWl21A/K7PQ00tseBwbqCHTvNLHSBd9M0R5rER4h5Rsvj9vw0R5SieBg==
+"@babel/helper-define-map@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/helper-define-map/-/helper-define-map-7.5.5.tgz#3dec32c2046f37e09b28c93eb0b103fd2a25d369"
+  integrity sha512-fTfxx7i0B5NJqvUOBBGREnrqbTxRh7zinBANpZXAVDlsZxYdclDp467G1sQ8VZYMnAURY3RpBUAgOYT9GfzHBg==
   dependencies:
     "@babel/helper-function-name" "^7.1.0"
-    "@babel/types" "^7.4.4"
-    lodash "^4.17.11"
+    "@babel/types" "^7.5.5"
+    lodash "^4.17.13"
 
 "@babel/helper-explode-assignable-expression@^7.1.0":
   version "7.1.0"
@@ -133,12 +151,12 @@
   dependencies:
     "@babel/types" "^7.4.4"
 
-"@babel/helper-member-expression-to-functions@^7.0.0":
-  version "7.0.0"
-  resolved "https://registry.yarnpkg.com/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.0.0.tgz#8cd14b0a0df7ff00f009e7d7a436945f47c7a16f"
-  integrity sha512-avo+lm/QmZlv27Zsi0xEor2fKcqWG56D5ae9dzklpIaY7cQMK5N8VSpaNVPPagiqmy7LrEjK1IWdGMOqPu5csg==
+"@babel/helper-member-expression-to-functions@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.5.5.tgz#1fb5b8ec4453a93c439ee9fe3aeea4a84b76b590"
+  integrity sha512-5qZ3D1uMclSNqYcXqiHoA0meVdv+xUEex9em2fqMnrk/scphGlGgg66zjMrPJESPwrFJ6sbfFQYUSa0Mz7FabA==
   dependencies:
-    "@babel/types" "^7.0.0"
+    "@babel/types" "^7.5.5"
 
 "@babel/helper-module-imports@^7.0.0":
   version "7.0.0"
@@ -208,25 +226,15 @@
     "@babel/traverse" "^7.1.0"
     "@babel/types" "^7.0.0"
 
-"@babel/helper-replace-supers@^7.1.0":
-  version "7.1.0"
-  resolved "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.1.0.tgz#5fc31de522ec0ef0899dc9b3e7cf6a5dd655f362"
-  integrity sha512-BvcDWYZRWVuDeXTYZWxekQNO5D4kO55aArwZOTFXw6rlLQA8ZaDicJR1sO47h+HrnCiDFiww0fSPV0d713KBGQ==
+"@babel/helper-replace-supers@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.5.5.tgz#f84ce43df031222d2bad068d2626cb5799c34bc2"
+  integrity sha512-XvRFWrNnlsow2u7jXDuH4jDDctkxbS7gXssrP4q2nUD606ukXHRvydj346wmNg+zAgpFx4MWf4+usfC93bElJg==
   dependencies:
-    "@babel/helper-member-expression-to-functions" "^7.0.0"
+    "@babel/helper-member-expression-to-functions" "^7.5.5"
     "@babel/helper-optimise-call-expression" "^7.0.0"
-    "@babel/traverse" "^7.1.0"
-    "@babel/types" "^7.0.0"
-
-"@babel/helper-replace-supers@^7.4.4":
-  version "7.4.4"
-  resolved "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.4.4.tgz#aee41783ebe4f2d3ab3ae775e1cc6f1a90cefa27"
-  integrity sha512-04xGEnd+s01nY1l15EuMS1rfKktNF+1CkKmHoErDppjAAZL+IUBZpzT748x262HF7fibaQPhbvWUl5HeSt1EXg==
-  dependencies:
-    "@babel/helper-member-expression-to-functions" "^7.0.0"
-    "@babel/helper-optimise-call-expression" "^7.0.0"
-    "@babel/traverse" "^7.4.4"
-    "@babel/types" "^7.4.4"
+    "@babel/traverse" "^7.5.5"
+    "@babel/types" "^7.5.5"
 
 "@babel/helper-simple-access@^7.1.0":
   version "7.1.0"
@@ -295,6 +303,11 @@
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.5.0.tgz#3e0713dff89ad6ae37faec3b29dcfc5c979770b7"
   integrity sha512-I5nW8AhGpOXGCCNYGc+p7ExQIBxRFnS2fd/d862bNOKvmoEPjYPcfIjsfdy0ujagYOIYPczKgD9l3FsgTkAzKA==
 
+"@babel/parser@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.5.5.tgz#02f077ac8817d3df4a832ef59de67565e71cca4b"
+  integrity sha512-E5BN68cqR7dhKan1SfqgPGhQ178bkVKpXTPEXnFJBrEt8/DKRZlybmy+IgYLTeN7tp1R5Ccmbm2rBk17sHYU3g==
+
 "@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"
@@ -320,10 +333,10 @@
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-syntax-json-strings" "^7.2.0"
 
-"@babel/plugin-proposal-object-rest-spread@^7.5.4":
-  version "7.5.4"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.5.4.tgz#250de35d867ce8260a31b1fdac6c4fc1baa99331"
-  integrity sha512-KCx0z3y7y8ipZUMAEEJOyNi11lMb/FOPUjjB113tfowgw0c16EGYos7worCKBcUAh2oG+OBnoUhsnTSoLpV9uA==
+"@babel/plugin-proposal-object-rest-spread@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.5.5.tgz#61939744f71ba76a3ae46b5eea18a54c16d22e58"
+  integrity sha512-F2DxJJSQ7f64FyTVl5cw/9MWn6naXGdk3Q3UhDbFEEHv+EilCPoeRD3Zh/Utx1CJz4uyKlQ4uH+bJPbEhMV7Zw==
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-syntax-object-rest-spread" "^7.2.0"
@@ -418,25 +431,25 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
-"@babel/plugin-transform-block-scoping@^7.4.4":
-  version "7.4.4"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.4.4.tgz#c13279fabf6b916661531841a23c4b7dae29646d"
-  integrity sha512-jkTUyWZcTrwxu5DD4rWz6rDB5Cjdmgz6z7M7RLXOJyCUkFBawssDGcGh8M/0FTSB87avyJI1HsTwUXp9nKA1PA==
+"@babel/plugin-transform-block-scoping@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.5.5.tgz#a35f395e5402822f10d2119f6f8e045e3639a2ce"
+  integrity sha512-82A3CLRRdYubkG85lKwhZB0WZoHxLGsJdux/cOVaJCJpvYFl1LVzAIFyRsa7CvXqW8rBM4Zf3Bfn8PHt5DP0Sg==
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
-    lodash "^4.17.11"
+    lodash "^4.17.13"
 
-"@babel/plugin-transform-classes@^7.4.4":
-  version "7.4.4"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-classes/-/plugin-transform-classes-7.4.4.tgz#0ce4094cdafd709721076d3b9c38ad31ca715eb6"
-  integrity sha512-/e44eFLImEGIpL9qPxSRat13I5QNRgBLu2hOQJCF7VLy/otSM/sypV1+XaIw5+502RX/+6YaSAPmldk+nhHDPw==
+"@babel/plugin-transform-classes@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-classes/-/plugin-transform-classes-7.5.5.tgz#d094299d9bd680a14a2a0edae38305ad60fb4de9"
+  integrity sha512-U2htCNK/6e9K7jGyJ++1p5XRU+LJjrwtoiVn9SzRlDT2KubcZ11OOwy3s24TjHxPgxNwonCYP7U2K51uVYCMDg==
   dependencies:
     "@babel/helper-annotate-as-pure" "^7.0.0"
-    "@babel/helper-define-map" "^7.4.4"
+    "@babel/helper-define-map" "^7.5.5"
     "@babel/helper-function-name" "^7.1.0"
     "@babel/helper-optimise-call-expression" "^7.0.0"
     "@babel/helper-plugin-utils" "^7.0.0"
-    "@babel/helper-replace-supers" "^7.4.4"
+    "@babel/helper-replace-supers" "^7.5.5"
     "@babel/helper-split-export-declaration" "^7.4.4"
     globals "^11.1.0"
 
@@ -557,13 +570,13 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
-"@babel/plugin-transform-object-super@^7.2.0":
-  version "7.2.0"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-object-super/-/plugin-transform-object-super-7.2.0.tgz#b35d4c10f56bab5d650047dad0f1d8e8814b6598"
-  integrity sha512-VMyhPYZISFZAqAPVkiYb7dUe2AsVi2/wCT5+wZdsNO31FojQJa9ns40hzZ6U9f50Jlq4w6qwzdBB2uwqZ00ebg==
+"@babel/plugin-transform-object-super@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-object-super/-/plugin-transform-object-super-7.5.5.tgz#c70021df834073c65eb613b8679cc4a381d1a9f9"
+  integrity sha512-un1zJQAhSosGFBduPgN/YFNvWVpRuHKU7IHBglLoLZsGmruJPOo6pbInneflUdmq7YvSVqhpPs5zdBvLnteltQ==
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
-    "@babel/helper-replace-supers" "^7.1.0"
+    "@babel/helper-replace-supers" "^7.5.5"
 
 "@babel/plugin-transform-parameters@^7.4.4":
   version "7.4.4"
@@ -649,17 +662,17 @@
     core-js "^2.5.7"
     regenerator-runtime "^0.12.0"
 
-"@babel/preset-env@~7.5.4":
-  version "7.5.4"
-  resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.5.4.tgz#64bc15041a3cbb0798930319917e70fcca57713d"
-  integrity sha512-hFnFnouyRNiH1rL8YkX1ANCNAUVC8Djwdqfev8i1415tnAG+7hlA5zhZ0Q/3Q5gkop4HioIPbCEWAalqcbxRoQ==
+"@babel/preset-env@~7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.5.5.tgz#bc470b53acaa48df4b8db24a570d6da1fef53c9a"
+  integrity sha512-GMZQka/+INwsMz1A5UEql8tG015h5j/qjptpKY2gJ7giy8ohzU710YciJB5rcKsWGWHiW3RUnHib0E5/m3Tp3A==
   dependencies:
     "@babel/helper-module-imports" "^7.0.0"
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-proposal-async-generator-functions" "^7.2.0"
     "@babel/plugin-proposal-dynamic-import" "^7.5.0"
     "@babel/plugin-proposal-json-strings" "^7.2.0"
-    "@babel/plugin-proposal-object-rest-spread" "^7.5.4"
+    "@babel/plugin-proposal-object-rest-spread" "^7.5.5"
     "@babel/plugin-proposal-optional-catch-binding" "^7.2.0"
     "@babel/plugin-proposal-unicode-property-regex" "^7.4.4"
     "@babel/plugin-syntax-async-generators" "^7.2.0"
@@ -670,8 +683,8 @@
     "@babel/plugin-transform-arrow-functions" "^7.2.0"
     "@babel/plugin-transform-async-to-generator" "^7.5.0"
     "@babel/plugin-transform-block-scoped-functions" "^7.2.0"
-    "@babel/plugin-transform-block-scoping" "^7.4.4"
-    "@babel/plugin-transform-classes" "^7.4.4"
+    "@babel/plugin-transform-block-scoping" "^7.5.5"
+    "@babel/plugin-transform-classes" "^7.5.5"
     "@babel/plugin-transform-computed-properties" "^7.2.0"
     "@babel/plugin-transform-destructuring" "^7.5.0"
     "@babel/plugin-transform-dotall-regex" "^7.4.4"
@@ -687,7 +700,7 @@
     "@babel/plugin-transform-modules-umd" "^7.2.0"
     "@babel/plugin-transform-named-capturing-groups-regex" "^7.4.5"
     "@babel/plugin-transform-new-target" "^7.4.4"
-    "@babel/plugin-transform-object-super" "^7.2.0"
+    "@babel/plugin-transform-object-super" "^7.5.5"
     "@babel/plugin-transform-parameters" "^7.4.4"
     "@babel/plugin-transform-property-literals" "^7.2.0"
     "@babel/plugin-transform-regenerator" "^7.4.5"
@@ -698,7 +711,7 @@
     "@babel/plugin-transform-template-literals" "^7.4.4"
     "@babel/plugin-transform-typeof-symbol" "^7.2.0"
     "@babel/plugin-transform-unicode-regex" "^7.4.4"
-    "@babel/types" "^7.5.0"
+    "@babel/types" "^7.5.5"
     browserslist "^4.6.0"
     core-js-compat "^3.1.1"
     invariant "^2.2.2"
@@ -755,13 +768,28 @@
     globals "^11.1.0"
     lodash "^4.17.11"
 
-"@babel/types@^7.0.0", "@babel/types@^7.2.0", "@babel/types@^7.3.0", "@babel/types@^7.4.4", "@babel/types@^7.5.0":
-  version "7.5.0"
-  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.5.0.tgz#e47d43840c2e7f9105bc4d3a2c371b4d0c7832ab"
-  integrity sha512-UFpDVqRABKsW01bvw7/wSUe56uy6RXM5+VJibVVAybDGxEW25jdwiFJEf7ASvSaC7sN7rbE/l3cLp2izav+CtQ==
+"@babel/traverse@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.5.5.tgz#f664f8f368ed32988cd648da9f72d5ca70f165bb"
+  integrity sha512-MqB0782whsfffYfSjH4TM+LMjrJnhCNEDMDIjeTpl+ASaUvxcjoiVCo/sM1GhS1pHOXYfWVCYneLjMckuUxDaQ==
+  dependencies:
+    "@babel/code-frame" "^7.5.5"
+    "@babel/generator" "^7.5.5"
+    "@babel/helper-function-name" "^7.1.0"
+    "@babel/helper-split-export-declaration" "^7.4.4"
+    "@babel/parser" "^7.5.5"
+    "@babel/types" "^7.5.5"
+    debug "^4.1.0"
+    globals "^11.1.0"
+    lodash "^4.17.13"
+
+"@babel/types@^7.0.0", "@babel/types@^7.2.0", "@babel/types@^7.3.0", "@babel/types@^7.4.4", "@babel/types@^7.5.0", "@babel/types@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.5.5.tgz#97b9f728e182785909aa4ab56264f090a028d18a"
+  integrity sha512-s63F9nJioLqOlW3UkyMd+BYhXt44YuaFm/VV0VwuteqjYwRrObkU7ra9pY4wAJR3oXi8hJrMcrcJdO/HH33vtw==
   dependencies:
     esutils "^2.0.2"
-    lodash "^4.17.11"
+    lodash "^4.17.13"
     to-fast-properties "^2.0.0"
 
 "@cnakazawa/watch@^1.0.3":