diff --git a/CH04 Counter App/package-lock.json b/CH04 Counter App/package-lock.json
index 55463c1..77ba96f 100644
--- a/CH04 Counter App/package-lock.json	
+++ b/CH04 Counter App/package-lock.json	
@@ -9818,9 +9818,9 @@
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+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.3.tgz",
+      "integrity": "sha512-qxXIEh4pCGfHICj1mAJQ2/2XVZkjCDTcEgfoSQxc/fYivUZxTkk7L3bDBJSoNrEzXI17oUO5Dp07ktqE5KzczA=="
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@@ -10671,11 +10671,6 @@
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-      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-2.1.1.tgz",
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@@ -11484,6 +11479,11 @@
         "worker-farm": "^1.7.0"
       },
       "dependencies": {
+        "serialize-javascript": {
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+          "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-1.9.1.tgz",
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