diff --git a/package-lock.json b/package-lock.json
index cc31f2f..ff80146 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,21 @@
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+      "version": "3.2.0",
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+        "once": "^1.3.2",
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+          "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-1.0.7.tgz",
+          "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M="
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-      "integrity": "sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8="
+      "version": "4.1.0",
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+      "version": "4.2.0",
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-        "map-obj": "^1.0.0"
+        "camelcase": "^4.1.0",
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-      "integrity": "sha1-tUc7M9yXxCTl2Y3IfVXU2KKci/I="
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+      "version": "2.0.0",
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+      "integrity": "sha1-2jCcwmPfFZlMaIypAheco8fNfH4="
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+          "integrity": "sha1-2TPOuSBdgr3PSIb2dCvcK03qFG0="
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+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
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@@ -1385,7 +1483,8 @@
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@@ -1395,6 +1494,7 @@
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@@ -1407,17 +1507,20 @@
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@@ -1434,6 +1537,7 @@
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@@ -1506,7 +1610,8 @@
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@@ -1745,6 +1847,19 @@
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+      "integrity": "sha512-095zqCagU2EAqCNoZxPeGN24kHhC1LPiAVKczkWijdA2w25Nht+EWkinRKO0U6T2AARwMGA/EEL51OEPcxJU6g==",
       "requires": {
-        "workbox-core": "^3.6.3"
+        "workbox-core": "^4.1.0"
       }
     },
     "workbox-streams": {
-      "version": "3.6.3",
-      "resolved": "https://registry.npmjs.org/workbox-streams/-/workbox-streams-3.6.3.tgz",
-      "integrity": "sha512-rqDuS4duj+3aZUYI1LsrD2t9hHOjwPqnUIfrXSOxSVjVn83W2MisDF2Bj+dFUZv4GalL9xqErcFW++9gH+Z27w==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/workbox-streams/-/workbox-streams-4.1.0.tgz",
+      "integrity": "sha512-auT3sfhkKPEt8Rd1JxM8O48FqDYEUrCXDiWYqhywbqx1RKDb8osam+cdg7HxOrW23HEpQpwjXzmcnlXyq0KsIw==",
       "requires": {
-        "workbox-core": "^3.6.3"
+        "workbox-core": "^4.1.0"
       }
     },
     "workbox-sw": {
-      "version": "3.6.3",
-      "resolved": "https://registry.npmjs.org/workbox-sw/-/workbox-sw-3.6.3.tgz",
-      "integrity": "sha512-IQOUi+RLhvYCiv80RP23KBW/NTtIvzvjex28B8NW1jOm+iV4VIu3VXKXTA6er5/wjjuhmtB28qEAUqADLAyOSg=="
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/workbox-sw/-/workbox-sw-4.1.0.tgz",
+      "integrity": "sha512-GDLQLdoCZZocl4AdNFSH51pijuOyabBko0V4wTfE3MraZCt2A7Slha3gkVSEZLM6BD/8b0wGmNpYwXR08G0Ytw=="
+    },
+    "workbox-window": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/workbox-window/-/workbox-window-4.1.0.tgz",
+      "integrity": "sha512-Lzz+MKqCUI92XA9J2uW/sNQ6xQdULGXNgpZH6eUlRx0WDZJJnFWPJ6YhDO6KlubJJTfOTzu3GgEU3Q6xvM1bMQ==",
+      "requires": {
+        "workbox-core": "^4.1.0"
+      }
     },
     "wrappy": {
       "version": "1.0.2",
@@ -4093,6 +4316,14 @@
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
       "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
+    },
+    "yargs-parser": {
+      "version": "10.1.0",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
+      "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+      "requires": {
+        "camelcase": "^4.1.0"
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 5b51013..ecbe4d7 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "react": "16.7.0",
     "react-dom": "16.7.0",
     "whatwg-fetch": "3.0.0",
-    "workbox-cli": "3.6.3",
+    "workbox-cli": "4.1.0",
     "xmlhttprequest": "1.8.0"
   }
 }