diff --git a/Chapter03/Activity3.01/package-lock.json b/Chapter03/Activity3.01/package-lock.json
index aed4edca..fa7c17f6 100644
--- a/Chapter03/Activity3.01/package-lock.json
+++ b/Chapter03/Activity3.01/package-lock.json
@@ -17,11 +17,11 @@
       "dev": true
     },
     "cross-fetch": {
-      "version": "3.0.5",
-      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-3.0.5.tgz",
-      "integrity": "sha512-FFLcLtraisj5eteosnX1gf01qYDCOc4fDy0+euOt8Kn9YBY2NtXL/pCoYPavw24NIQkQqm5ZOLsGD5Zzj0gyew==",
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-3.1.5.tgz",
+      "integrity": "sha512-lvb1SBsI0Z7GDwmuid+mU3kWVBwTVUbe7S0H52yaaAdQOXq2YktTCZdlAcNKFzE6QtRz0snpw9bNiPeOIkkQvw==",
       "requires": {
-        "node-fetch": "2.6.0"
+        "node-fetch": "2.6.7"
       }
     },
     "diff": {
@@ -37,9 +37,12 @@
       "dev": true
     },
     "node-fetch": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
-      "integrity": "sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA=="
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
+      "requires": {
+        "whatwg-url": "^5.0.0"
+      }
     },
     "source-map": {
       "version": "0.6.1",
@@ -57,6 +60,11 @@
         "source-map": "^0.6.0"
       }
     },
+    "tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o="
+    },
     "ts-node": {
       "version": "9.0.0",
       "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-9.0.0.tgz",
@@ -76,6 +84,20 @@
       "integrity": "sha512-e4ERvRV2wb+rRZ/IQeb3jm2VxBsirQLpQhdxplZ2MEzGvDkkMmPglecnNDfSUBivMjP93vRbngYYDQqQ/78bcQ==",
       "dev": true
     },
+    "webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE="
+    },
+    "whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha1-lmRU6HZUYuN2RNNib2dCzotwll0=",
+      "requires": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
     "yn": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
diff --git a/Chapter03/Activity3.01/package.json b/Chapter03/Activity3.01/package.json
index 836ae1c6..1306d846 100644
--- a/Chapter03/Activity3.01/package.json
+++ b/Chapter03/Activity3.01/package.json
@@ -14,6 +14,6 @@
     "typescript": "^4.0.2"
   },
   "dependencies": {
-    "cross-fetch": "^3.0.5"
+    "cross-fetch": "^3.1.5"
   }
 }