diff --git a/config/webpack.config.js b/config/webpack.config.js
index 490c53b628..2b2e6e187b 100644
--- a/config/webpack.config.js
+++ b/config/webpack.config.js
@@ -563,8 +563,8 @@ module.exports = function(webpackEnv) {
           // NOTE 2020-01-14 CC - Add support to cache firebase storage and map tiles
           runtimeCaching: [
             {
-              urlPattern: /.*\.(?:png|gif|jpg|jpeg|webp|svg).*/gi,
-              handler: 'cacheFirst',
+              urlPattern: new RegExp(/.*\.(?:png|gif|jpg|jpeg|webp|svg).*/gi),
+              handler: 'StaleWhileRevalidate',
               options: {
                 cacheName: 'oa-images',
                 fetchOptions: {
@@ -574,20 +574,44 @@ module.exports = function(webpackEnv) {
                 backgroundSync: {
                   name: 'oa-images-background',
                   options: {
-                    maxRetentionTime: 60 * 24,
+                    maxRetentionTime: 60 * 60 * 24,
                   },
                 },
                 expiration: {
-                  maxAgeSeconds: 60 * 24 * 7 * 30,
+                  maxAgeSeconds: 60 * 60 * 24 * 365,
                   maxEntries: 1000,
                 },
+                matchOptions: {
+                  ignoreSearch: true,
+                },
               },
             },
+            {
+              urlPattern: new RegExp(
+                '^https://firebasestorage\\.googleapis\\.com/',
+              ),
+              handler: 'StaleWhileRevalidate',
+              options: {
+                cacheName: 'oa-other',
+                fetchOptions: {
+                  credentials: 'same-origin',
+                  mode: 'cors',
+                },
+                matchOptions: {
+                  ignoreSearch: true,
+                },
+              },
+            },
+            {
+              urlPattern: new RegExp('^https://firestore\\.googleapis\\.com/'),
+              handler: 'NetworkOnly',
+            },
           ],
           // end update 2020-01-14
           exclude: [/\.map$/, /asset-manifest\.json$/],
           importWorkboxFrom: 'cdn',
           navigateFallback: publicUrl + '/index.html',
+          navigateFallbackWhitelist: [/^(?!\/__)/],
           navigateFallbackBlacklist: [
             // Exclude URLs starting with /_, as they're likely an API call
             new RegExp('^/_'),
diff --git a/firebase.json b/firebase.json
index caff31038d..5e0b0d7d0b 100644
--- a/firebase.json
+++ b/firebase.json
@@ -26,6 +26,30 @@
           }
         ]
       }
+    ],
+    "headers": [
+      {
+        "source": "**/*.@(eot|otf|ttf|ttc|woff|font.css)",
+        "headers": [
+          {
+            "key": "Access-Control-Allow-Origin",
+            "value": "*"
+          }
+        ]
+      },
+      {
+        "source": "**/*.@(jpg|jpeg|gif|png)",
+        "headers": [
+          {
+            "key": "Cache-Control",
+            "value": "max-age=604800, s-maxage=3600"
+          },
+          {
+            "key": "Access-Control-Allow-Origin",
+            "value": "*"
+          }
+        ]
+      }
     ]
   },
   "functions": {
diff --git a/package.json b/package.json
index 631793d0bd..32a86785de 100644
--- a/package.json
+++ b/package.json
@@ -15,9 +15,6 @@
     "storybook": "start-storybook -p 6006",
     "build-storybook": "build-storybook",
     "analyze": "npm run build -- --stats & npx webpack-bundle-analyzer ./build/bundle-stats.json",
-    "prod:serve": "npm run prod:copy && npm run build && npm run prod:restore && firebase serve",
-    "prod:copy": "cp .env .env-default && cp ./.env-prod ./.env",
-    "prod:restore": "cp .env-default .env && rm .env-default",
     "start:ci": "cross-env SITE_VARIANT=test-ci BROWSER=none PORT=3456 npm run start",
     "cy:run": "cross-env TZ='Europe/London' cypress run",
     "cy:open": "cross-env TZ='Europe/London' npx cypress open",
@@ -189,7 +186,7 @@
     "webpack": "4.28.3",
     "webpack-dev-server": "3.1.14",
     "webpack-manifest-plugin": "2.0.4",
-    "workbox-webpack-plugin": "3.6.3"
+    "workbox-webpack-plugin": "4.3.1"
   },
   "resolutions": {
     "@types/react": "16.8.4"
diff --git a/yarn.lock b/yarn.lock
index e8a603779c..0c1591ea94 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2503,7 +2503,7 @@
   resolved "https://registry.yarnpkg.com/@hapi/hoek/-/hoek-8.3.0.tgz#2b9db1cd00f3891005c77b3a8d608b88a6d0aa4d"
   integrity sha512-C0QL9bmgUXTSuf8nDeGrpMjtJG7tPUr8wG6/wxPbP62tGwCwQtdMSJYfESowmY4P3Hn593f+8OzNY5bckcu/LQ==
 
-"@hapi/joi@^15.0.3":
+"@hapi/joi@^15.0.0", "@hapi/joi@^15.0.3":
   version "15.1.1"
   resolved "https://registry.yarnpkg.com/@hapi/joi/-/joi-15.1.1.tgz#c675b8a71296f02833f8d6d243b34c57b8ce19d7"
   integrity sha512-entf8ZMOK8sc+8YfeOlM8pCfg3b5+WZIKBfUaaJT8UsjAAPjartzxIYm3TIbjvA4u+u++KbcXD38k682nVHDAQ==
@@ -6397,7 +6397,7 @@ commander@~2.19.0:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.19.0.tgz#f6198aa84e5b83c46054b94ddedbfed5ee9ff12a"
   integrity sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg==
 
-common-tags@1.8.0, common-tags@^1.4.0, common-tags@^1.8.0:
+common-tags@1.8.0, common-tags@^1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/common-tags/-/common-tags-1.8.0.tgz#8e3153e542d4a39e9b10554434afaaf98956a937"
   integrity sha512-6P6g0uetGpW/sdyUy/iQQCbFF0kWVMSIVSyYz7Zgjcgh8mgw8PQzDNZeyZ5DQ2gM7LBoZPHmnjz8rUthkBG5tw==
@@ -9589,11 +9589,6 @@ hmac-drbg@^1.0.0:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.1"
 
-hoek@4.x.x:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.1.tgz#9634502aa12c445dd5a7c5734b572bb8738aacbb"
-  integrity sha512-QLg82fGkfnJ/4iy1xZ81/9SIJiq1NGFUMGs6ParyjBZr6jW2Ufj/snDqTHixNlHdPNwN2RLVD0Pi3igeK9+JfA==
-
 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"
@@ -10653,13 +10648,6 @@ isarray@^2.0.1:
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-2.0.5.tgz#8af1e4c1221244cc62459faf38940d4e644a5723"
   integrity sha512-xHjhDr3cNBK0BzdUJSPXZntQUx/mwMS5Rw4A7lPJ90XGAO6ISP/ePDNuo0vhqOZU+UD5JoodwCAAoZQd3FeAKw==
 
-isemail@3.x.x:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/isemail/-/isemail-3.2.0.tgz#59310a021931a9fb06bbb51e155ce0b3f236832c"
-  integrity sha512-zKqkK+O+dGqevc93KNsbZ/TqTUFd46MwWjYOoMrjIMZ51eU7DtQG3Wmd9SQQT7i7RVnuTPEiYEWHU3MSbxC1Tg==
-  dependencies:
-    punycode "2.x.x"
-
 isexe@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
@@ -11099,15 +11087,6 @@ jest@23.6.0:
     import-local "^1.0.0"
     jest-cli "^23.6.0"
 
-joi@^11.1.1:
-  version "11.4.0"
-  resolved "https://registry.yarnpkg.com/joi/-/joi-11.4.0.tgz#f674897537b625e9ac3d0b7e1604c828ad913ccb"
-  integrity sha512-O7Uw+w/zEWgbL6OcHbyACKSj0PkQeUgmehdoXVSxt92QFCq4+1390Rwh5moI2K/OgC7D8RHRZqHZxT2husMJHA==
-  dependencies:
-    hoek "4.x.x"
-    isemail "3.x.x"
-    topo "2.x.x"
-
 js-base64@^2.1.8:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-2.5.1.tgz#1efa39ef2c5f7980bb1784ade4a8af2de3291121"
@@ -14351,10 +14330,10 @@ prettier@^1.16.4:
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.18.2.tgz#6823e7c5900017b4bd3acf46fe9ac4b4d7bda9ea"
   integrity sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==
 
-pretty-bytes@^4.0.2:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/pretty-bytes/-/pretty-bytes-4.0.2.tgz#b2bf82e7350d65c6c33aa95aaa5a4f6327f61cd9"
-  integrity sha1-sr+C5zUNZcbDOqlaqlpPYyf2HNk=
+pretty-bytes@^5.1.0:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/pretty-bytes/-/pretty-bytes-5.3.0.tgz#f2849e27db79fb4d6cfe24764fc4134f165989f2"
+  integrity sha512-hjGrh+P926p4R4WbaB6OckyRtO0F0/lQBiT+0gnxjV+5kjPBrfVBFCsCLbMqVQeydvIoouYTCmmEURiH3R1Bdg==
 
 pretty-error@^2.0.2, pretty-error@^2.1.1:
   version "2.1.1"
@@ -14597,16 +14576,16 @@ punycode@1.3.2:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.3.2.tgz#9653a036fb7c1ee42342f2325cceefea3926c48d"
   integrity sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0=
 
-punycode@2.x.x, punycode@^2.1.0, punycode@^2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
-  integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
-
 punycode@^1.2.4, punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
   integrity sha1-wNWmOycYgArY4esPpSachN1BhF4=
 
+punycode@^2.1.0, punycode@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
+  integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
+
 q@^1.1.2:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
@@ -16842,7 +16821,7 @@ string_decoder@~1.1.1:
   dependencies:
     safe-buffer "~5.1.0"
 
-stringify-object@^3.2.2:
+stringify-object@^3.2.2, stringify-object@^3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/stringify-object/-/stringify-object-3.3.0.tgz#703065aefca19300d3ce88af4f5b3956d7556629"
   integrity sha512-rHqiFh1elqCQ9WPLIC8I0Q/g/wj5J1eMkyoiD6eoQApWHP0FtlK7rqnhmabL5VUY9JQCcqwwvlOaSuutekgyrw==
@@ -17376,13 +17355,6 @@ toidentifier@1.0.0:
   resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
   integrity sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==
 
-topo@2.x.x:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/topo/-/topo-2.0.2.tgz#cd5615752539057c0dc0491a621c3bc6fbe1d182"
-  integrity sha1-zVYVdSU5BXwNwEkaYhw7xvvh0YI=
-  dependencies:
-    hoek "4.x.x"
-
 toposort@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/toposort/-/toposort-2.0.2.tgz#ae21768175d1559d48bef35420b2f4962f09c330"
@@ -18340,132 +18312,140 @@ wordwrap@~1.0.0:
   resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
   integrity sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=
 
-workbox-background-sync@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-background-sync/-/workbox-background-sync-3.6.3.tgz#6609a0fac9eda336a7c52e6aa227ba2ae532ad94"
-  integrity sha512-ypLo0B6dces4gSpaslmDg5wuoUWrHHVJfFWwl1udvSylLdXvnrfhFfriCS42SNEe5lsZtcNZF27W/SMzBlva7Q==
+workbox-background-sync@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-background-sync/-/workbox-background-sync-4.3.1.tgz#26821b9bf16e9e37fd1d640289edddc08afd1950"
+  integrity sha512-1uFkvU8JXi7L7fCHVBEEnc3asPpiAL33kO495UMcD5+arew9IbKW2rV5lpzhoWcm/qhGB89YfO4PmB/0hQwPRg==
   dependencies:
-    workbox-core "^3.6.3"
+    workbox-core "^4.3.1"
 
-workbox-broadcast-cache-update@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-broadcast-cache-update/-/workbox-broadcast-cache-update-3.6.3.tgz#3f5dff22ada8c93e397fb38c1dc100606a7b92da"
-  integrity sha512-pJl4lbClQcvp0SyTiEw0zLSsVYE1RDlCPtpKnpMjxFtu8lCFTAEuVyzxp9w7GF4/b3P4h5nyQ+q7V9mIR7YzGg==
+workbox-broadcast-update@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-broadcast-update/-/workbox-broadcast-update-4.3.1.tgz#e2c0280b149e3a504983b757606ad041f332c35b"
+  integrity sha512-MTSfgzIljpKLTBPROo4IpKjESD86pPFlZwlvVG32Kb70hW+aob4Jxpblud8EhNb1/L5m43DUM4q7C+W6eQMMbA==
   dependencies:
-    workbox-core "^3.6.3"
+    workbox-core "^4.3.1"
 
-workbox-build@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-build/-/workbox-build-3.6.3.tgz#77110f9f52dc5d82fa6c1c384c6f5e2225adcbd8"
-  integrity sha512-w0clZ/pVjL8VXy6GfthefxpEXs0T8uiRuopZSFVQ8ovfbH6c6kUpEh6DcYwm/Y6dyWPiCucdyAZotgjz+nRz8g==
+workbox-build@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-build/-/workbox-build-4.3.1.tgz#414f70fb4d6de47f6538608b80ec52412d233e64"
+  integrity sha512-UHdwrN3FrDvicM3AqJS/J07X0KXj67R8Cg0waq1MKEOqzo89ap6zh6LmaLnRAjpB+bDIz+7OlPye9iii9KBnxw==
   dependencies:
-    babel-runtime "^6.26.0"
-    common-tags "^1.4.0"
+    "@babel/runtime" "^7.3.4"
+    "@hapi/joi" "^15.0.0"
+    common-tags "^1.8.0"
     fs-extra "^4.0.2"
-    glob "^7.1.2"
-    joi "^11.1.1"
+    glob "^7.1.3"
     lodash.template "^4.4.0"
-    pretty-bytes "^4.0.2"
-    stringify-object "^3.2.2"
+    pretty-bytes "^5.1.0"
+    stringify-object "^3.3.0"
     strip-comments "^1.0.2"
-    workbox-background-sync "^3.6.3"
-    workbox-broadcast-cache-update "^3.6.3"
-    workbox-cache-expiration "^3.6.3"
-    workbox-cacheable-response "^3.6.3"
-    workbox-core "^3.6.3"
-    workbox-google-analytics "^3.6.3"
-    workbox-navigation-preload "^3.6.3"
-    workbox-precaching "^3.6.3"
-    workbox-range-requests "^3.6.3"
-    workbox-routing "^3.6.3"
-    workbox-strategies "^3.6.3"
-    workbox-streams "^3.6.3"
-    workbox-sw "^3.6.3"
-
-workbox-cache-expiration@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-cache-expiration/-/workbox-cache-expiration-3.6.3.tgz#4819697254a72098a13f94b594325a28a1e90372"
-  integrity sha512-+ECNph/6doYx89oopO/UolYdDmQtGUgo8KCgluwBF/RieyA1ZOFKfrSiNjztxOrGJoyBB7raTIOlEEwZ1LaHoA==
-  dependencies:
-    workbox-core "^3.6.3"
-
-workbox-cacheable-response@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-cacheable-response/-/workbox-cacheable-response-3.6.3.tgz#869f1a68fce9063f6869ddbf7fa0a2e0a868b3aa"
-  integrity sha512-QpmbGA9SLcA7fklBLm06C4zFg577Dt8u3QgLM0eMnnbaVv3rhm4vbmDpBkyTqvgK/Ly8MBDQzlXDtUCswQwqqg==
-  dependencies:
-    workbox-core "^3.6.3"
-
-workbox-core@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-core/-/workbox-core-3.6.3.tgz#69abba70a4f3f2a5c059295a6f3b7c62bd00e15c"
-  integrity sha512-cx9cx0nscPkIWs8Pt98HGrS9/aORuUcSkWjG25GqNWdvD/pSe7/5Oh3BKs0fC+rUshCiyLbxW54q0hA+GqZeSQ==
-
-workbox-google-analytics@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-google-analytics/-/workbox-google-analytics-3.6.3.tgz#99df2a3d70d6e91961e18a6752bac12e91fbf727"
-  integrity sha512-RQBUo/6SXtIaQTRFj4RQZ9e1gAl7D8oS5S+Hi173Kk70/BgJjzPwXpC5A249Jv5YfkCOLMQCeF9A27BiD0b0ig==
-  dependencies:
-    workbox-background-sync "^3.6.3"
-    workbox-core "^3.6.3"
-    workbox-routing "^3.6.3"
-    workbox-strategies "^3.6.3"
-
-workbox-navigation-preload@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-navigation-preload/-/workbox-navigation-preload-3.6.3.tgz#a2c34eb7c17e7485b795125091215f757b3c4964"
-  integrity sha512-dd26xTX16DUu0i+MhqZK/jQXgfIitu0yATM4jhRXEmpMqQ4MxEeNvl2CgjDMOHBnCVMax+CFZQWwxMx/X/PqCw==
-  dependencies:
-    workbox-core "^3.6.3"
-
-workbox-precaching@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-precaching/-/workbox-precaching-3.6.3.tgz#5341515e9d5872c58ede026a31e19bafafa4e1c1"
-  integrity sha512-aBqT66BuMFviPTW6IpccZZHzpA8xzvZU2OM1AdhmSlYDXOJyb1+Z6blVD7z2Q8VNtV1UVwQIdImIX+hH3C3PIw==
-  dependencies:
-    workbox-core "^3.6.3"
-
-workbox-range-requests@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-range-requests/-/workbox-range-requests-3.6.3.tgz#3cc21cba31f2dd8c43c52a196bcc8f6cdbcde803"
-  integrity sha512-R+yLWQy7D9aRF9yJ3QzwYnGFnGDhMUij4jVBUVtkl67oaVoP1ymZ81AfCmfZro2kpPRI+vmNMfxxW531cqdx8A==
-  dependencies:
-    workbox-core "^3.6.3"
-
-workbox-routing@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-routing/-/workbox-routing-3.6.3.tgz#659cd8f9274986cfa98fda0d050de6422075acf7"
-  integrity sha512-bX20i95OKXXQovXhFOViOK63HYmXvsIwZXKWbSpVeKToxMrp0G/6LZXnhg82ijj/S5yhKNRf9LeGDzaqxzAwMQ==
-  dependencies:
-    workbox-core "^3.6.3"
-
-workbox-strategies@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-strategies/-/workbox-strategies-3.6.3.tgz#11a0dc249a7bc23d3465ec1322d28fa6643d64a0"
-  integrity sha512-Pg5eulqeKet2y8j73Yw6xTgLdElktcWExGkzDVCGqfV9JCvnGuEpz5eVsCIK70+k4oJcBCin9qEg3g3CwEIH3g==
-  dependencies:
-    workbox-core "^3.6.3"
-
-workbox-streams@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-streams/-/workbox-streams-3.6.3.tgz#beaea5d5b230239836cc327b07d471aa6101955a"
-  integrity sha512-rqDuS4duj+3aZUYI1LsrD2t9hHOjwPqnUIfrXSOxSVjVn83W2MisDF2Bj+dFUZv4GalL9xqErcFW++9gH+Z27w==
-  dependencies:
-    workbox-core "^3.6.3"
-
-workbox-sw@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-sw/-/workbox-sw-3.6.3.tgz#278ea4c1831b92bbe2d420da8399176c4b2789ff"
-  integrity sha512-IQOUi+RLhvYCiv80RP23KBW/NTtIvzvjex28B8NW1jOm+iV4VIu3VXKXTA6er5/wjjuhmtB28qEAUqADLAyOSg==
-
-workbox-webpack-plugin@3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/workbox-webpack-plugin/-/workbox-webpack-plugin-3.6.3.tgz#a807bb891b4e4e3c808df07e58f17de2d5ba6182"
-  integrity sha512-RwmKjc7HFHUFHoOlKoZUq9349u0QN3F8W5tZZU0vc1qsBZDINWXRiIBCAKvo/Njgay5sWz7z4I2adnyTo97qIQ==
+    workbox-background-sync "^4.3.1"
+    workbox-broadcast-update "^4.3.1"
+    workbox-cacheable-response "^4.3.1"
+    workbox-core "^4.3.1"
+    workbox-expiration "^4.3.1"
+    workbox-google-analytics "^4.3.1"
+    workbox-navigation-preload "^4.3.1"
+    workbox-precaching "^4.3.1"
+    workbox-range-requests "^4.3.1"
+    workbox-routing "^4.3.1"
+    workbox-strategies "^4.3.1"
+    workbox-streams "^4.3.1"
+    workbox-sw "^4.3.1"
+    workbox-window "^4.3.1"
+
+workbox-cacheable-response@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-cacheable-response/-/workbox-cacheable-response-4.3.1.tgz#f53e079179c095a3f19e5313b284975c91428c91"
+  integrity sha512-Rp5qlzm6z8IOvnQNkCdO9qrDgDpoPNguovs0H8C+wswLuPgSzSp9p2afb5maUt9R1uTIwOXrVQMmPfPypv+npw==
   dependencies:
-    babel-runtime "^6.26.0"
+    workbox-core "^4.3.1"
+
+workbox-core@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-core/-/workbox-core-4.3.1.tgz#005d2c6a06a171437afd6ca2904a5727ecd73be6"
+  integrity sha512-I3C9jlLmMKPxAC1t0ExCq+QoAMd0vAAHULEgRZ7kieCdUd919n53WC0AfvokHNwqRhGn+tIIj7vcb5duCjs2Kg==
+
+workbox-expiration@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-expiration/-/workbox-expiration-4.3.1.tgz#d790433562029e56837f341d7f553c4a78ebe921"
+  integrity sha512-vsJLhgQsQouv9m0rpbXubT5jw0jMQdjpkum0uT+d9tTwhXcEZks7qLfQ9dGSaufTD2eimxbUOJfWLbNQpIDMPw==
+  dependencies:
+    workbox-core "^4.3.1"
+
+workbox-google-analytics@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-google-analytics/-/workbox-google-analytics-4.3.1.tgz#9eda0183b103890b5c256e6f4ea15a1f1548519a"
+  integrity sha512-xzCjAoKuOb55CBSwQrbyWBKqp35yg1vw9ohIlU2wTy06ZrYfJ8rKochb1MSGlnoBfXGWss3UPzxR5QL5guIFdg==
+  dependencies:
+    workbox-background-sync "^4.3.1"
+    workbox-core "^4.3.1"
+    workbox-routing "^4.3.1"
+    workbox-strategies "^4.3.1"
+
+workbox-navigation-preload@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-navigation-preload/-/workbox-navigation-preload-4.3.1.tgz#29c8e4db5843803b34cd96dc155f9ebd9afa453d"
+  integrity sha512-K076n3oFHYp16/C+F8CwrRqD25GitA6Rkd6+qAmLmMv1QHPI2jfDwYqrytOfKfYq42bYtW8Pr21ejZX7GvALOw==
+  dependencies:
+    workbox-core "^4.3.1"
+
+workbox-precaching@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-precaching/-/workbox-precaching-4.3.1.tgz#9fc45ed122d94bbe1f0ea9584ff5940960771cba"
+  integrity sha512-piSg/2csPoIi/vPpp48t1q5JLYjMkmg5gsXBQkh/QYapCdVwwmKlU9mHdmy52KsDGIjVaqEUMFvEzn2LRaigqQ==
+  dependencies:
+    workbox-core "^4.3.1"
+
+workbox-range-requests@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-range-requests/-/workbox-range-requests-4.3.1.tgz#f8a470188922145cbf0c09a9a2d5e35645244e74"
+  integrity sha512-S+HhL9+iTFypJZ/yQSl/x2Bf5pWnbXdd3j57xnb0V60FW1LVn9LRZkPtneODklzYuFZv7qK6riZ5BNyc0R0jZA==
+  dependencies:
+    workbox-core "^4.3.1"
+
+workbox-routing@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-routing/-/workbox-routing-4.3.1.tgz#a675841af623e0bb0c67ce4ed8e724ac0bed0cda"
+  integrity sha512-FkbtrODA4Imsi0p7TW9u9MXuQ5P4pVs1sWHK4dJMMChVROsbEltuE79fBoIk/BCztvOJ7yUpErMKa4z3uQLX+g==
+  dependencies:
+    workbox-core "^4.3.1"
+
+workbox-strategies@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-strategies/-/workbox-strategies-4.3.1.tgz#d2be03c4ef214c115e1ab29c9c759c9fe3e9e646"
+  integrity sha512-F/+E57BmVG8dX6dCCopBlkDvvhg/zj6VDs0PigYwSN23L8hseSRwljrceU2WzTvk/+BSYICsWmRq5qHS2UYzhw==
+  dependencies:
+    workbox-core "^4.3.1"
+
+workbox-streams@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-streams/-/workbox-streams-4.3.1.tgz#0b57da70e982572de09c8742dd0cb40a6b7c2cc3"
+  integrity sha512-4Kisis1f/y0ihf4l3u/+ndMkJkIT4/6UOacU3A4BwZSAC9pQ9vSvJpIi/WFGQRH/uPXvuVjF5c2RfIPQFSS2uA==
+  dependencies:
+    workbox-core "^4.3.1"
+
+workbox-sw@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-sw/-/workbox-sw-4.3.1.tgz#df69e395c479ef4d14499372bcd84c0f5e246164"
+  integrity sha512-0jXdusCL2uC5gM3yYFT6QMBzKfBr2XTk0g5TPAV4y8IZDyVNDyj1a8uSXy3/XrvkVTmQvLN4O5k3JawGReXr9w==
+
+workbox-webpack-plugin@4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-webpack-plugin/-/workbox-webpack-plugin-4.3.1.tgz#47ff5ea1cc074b6c40fb5a86108863a24120d4bd"
+  integrity sha512-gJ9jd8Mb8wHLbRz9ZvGN57IAmknOipD3W4XNE/Lk/4lqs5Htw4WOQgakQy/o/4CoXQlMCYldaqUg+EJ35l9MEQ==
+  dependencies:
+    "@babel/runtime" "^7.0.0"
     json-stable-stringify "^1.0.1"
-    workbox-build "^3.6.3"
+    workbox-build "^4.3.1"
+
+workbox-window@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/workbox-window/-/workbox-window-4.3.1.tgz#ee6051bf10f06afa5483c9b8dfa0531994ede0f3"
+  integrity sha512-C5gWKh6I58w3GeSc0wp2Ne+rqVw8qwcmZnQGpjiek8A2wpbxSJb1FdCoQVO+jDJs35bFgo/WETgl1fqgsxN0Hg==
+  dependencies:
+    workbox-core "^4.3.1"
 
 worker-farm@^1.5.2, worker-farm@^1.7.0:
   version "1.7.0"