diff --git a/package-lock.json b/package-lock.json
index a11a7e99b0b..92e68724ba0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -77,7 +77,7 @@
         "text-diff": "1.0.1",
         "tsd": "0.26.0",
         "tsx": "3.12.3",
-        "typescript": "4.9.5",
+        "typescript": "5.0.4",
         "wireit": "0.9.5",
         "zod": "3.21.2"
       }
@@ -8889,15 +8889,16 @@
       }
     },
     "node_modules/typescript": {
-      "version": "4.9.5",
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.0.4.tgz",
+      "integrity": "sha512-cW9T5W9xY37cc+jfEnaUvX91foxtHkza3Nw3wkoF4sSlKn0MONdkdEndig/qPBWXNkmplh3NzayQzCiHM4/hqw==",
       "devOptional": true,
-      "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=12.20"
       }
     },
     "node_modules/unbox-primitive": {
@@ -15440,7 +15441,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "4.9.5",
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.0.4.tgz",
+      "integrity": "sha512-cW9T5W9xY37cc+jfEnaUvX91foxtHkza3Nw3wkoF4sSlKn0MONdkdEndig/qPBWXNkmplh3NzayQzCiHM4/hqw==",
       "devOptional": true
     },
     "unbox-primitive": {
diff --git a/package.json b/package.json
index 508847bcba5..89c5857cf1c 100644
--- a/package.json
+++ b/package.json
@@ -181,7 +181,7 @@
     "text-diff": "1.0.1",
     "tsd": "0.26.0",
     "tsx": "3.12.3",
-    "typescript": "4.9.5",
+    "typescript": "5.0.4",
     "wireit": "0.9.5",
     "zod": "3.21.2"
   },
diff --git a/packages/puppeteer-core/src/common/bidi/Serializer.ts b/packages/puppeteer-core/src/common/bidi/Serializer.ts
index f28b0e73186..8b61c2b4535 100644
--- a/packages/puppeteer-core/src/common/bidi/Serializer.ts
+++ b/packages/puppeteer-core/src/common/bidi/Serializer.ts
@@ -178,7 +178,6 @@ export class BidiSerializer {
       case 'NaN':
         return NaN;
       case 'Infinity':
-      case '+Infinity':
         return Infinity;
       case '-Infinity':
         return -Infinity;