diff --git a/third_party/js_code_coverage/README.chromium b/third_party/js_code_coverage/README.chromium
index 1a68279e95f247..3fdfcce35647a7 100644
--- a/third_party/js_code_coverage/README.chromium
+++ b/third_party/js_code_coverage/README.chromium
@@ -1,7 +1,7 @@
 Name: V8 to Istanbul Coverage Converter
 Short Name: v8-to-istanbul
 URL: https://www.npmjs.com/package/v8-to-istanbul
-Version: 7.1.2
+Version: 9.0.1
 License: ISC
 License File: NOT_SHIPPED
 Security Critical: no
@@ -15,7 +15,7 @@ Local Modifications:
 Name: Source map
 Short Name: source-map
 URL: https://www.npmjs.com/package/source-map
-Version: 0.7.3
+Version: 0.7.4
 License: BSD-3-Clause
 License File: NOT_SHIPPED
 Security Critical: No. Not shipped in Chrome, used to generate source maps for build steps.
@@ -56,3 +56,14 @@ Security Critical: No. Not shipped in Chrome, used to take arguments for JS file
 Description:
 Argparse is used to take, validate and parse CLI arguments for JavaScript scripts
 which are run as CLI scripts.
+
+Name: istanbul-lib-coverage
+Short Name: istanbul-lib-coverage
+URL: https://www.npmjs.com/package/istanbul-lib-coverage
+Version: 3.2.0
+License: BSD-3-Clause
+License File: NOT_SHIPPED
+Security Critical: No. Not shipped in Chrome, used to merge coverage reports.
+
+Description:
+istanbul-lib-coverage is used to merge coverage reports by the NYC library.
\ No newline at end of file
diff --git a/third_party/js_code_coverage/node_modules.tar.gz.sha1 b/third_party/js_code_coverage/node_modules.tar.gz.sha1
index 8b1dbb00cd360e..3bf338cd70951a 100644
--- a/third_party/js_code_coverage/node_modules.tar.gz.sha1
+++ b/third_party/js_code_coverage/node_modules.tar.gz.sha1
@@ -1 +1 @@
-0871d22e51e0e48b8bc98adce4b3cfade3939f97
+d538975c93eefc7bafd599b50f867e90c1ef17f3
diff --git a/third_party/js_code_coverage/package-lock.json b/third_party/js_code_coverage/package-lock.json
index d50a984dbf99fd..efc18b111748f4 100644
--- a/third_party/js_code_coverage/package-lock.json
+++ b/third_party/js_code_coverage/package-lock.json
@@ -9,9 +9,10 @@
       "version": "1.0.0",
       "dependencies": {
         "argparse": "2.0.1",
+        "istanbul-lib-coverage": "3.2.0",
         "nyc": "15.1.0",
-        "source-map": "0.7.3",
-        "v8-to-istanbul": "7.1.2"
+        "source-map": "0.7.4",
+        "v8-to-istanbul": "9.0.1"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -278,6 +279,28 @@
         "node": ">=8"
       }
     },
+    "node_modules/@jridgewell/resolve-uri": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.0.tgz",
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+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@jridgewell/sourcemap-codec": {
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+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.14.tgz",
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+    },
+    "node_modules/@jridgewell/trace-mapping": {
+      "version": "0.3.14",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.14.tgz",
+      "integrity": "sha512-bJWEfQ9lPTvm3SneWwRFVLzrh6nhjwqw7TUFFBEMzwvg7t7PCDenf2lDwqo4NQXzdpgBXyFgDWnQA+2vkruksQ==",
+      "dependencies": {
+        "@jridgewell/resolve-uri": "^3.0.3",
+        "@jridgewell/sourcemap-codec": "^1.4.10"
+      }
+    },
     "node_modules/@types/istanbul-lib-coverage": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.3.tgz",
@@ -773,9 +796,9 @@
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-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.0.0.tgz",
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+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.2.0.tgz",
+      "integrity": "sha512-eOeJ5BHCmHYvQK7xt9GkdHuzuCGS1Y6g9Gvnx3Ym33fz/HpLRYxiS0wHNr+m/MBC8B647Xt608vCDEvhl9c6Mw==",
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         "node": ">=8"
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@@ -1245,9 +1268,9 @@
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     },
     "node_modules/source-map": {
-      "version": "0.7.3",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.3.tgz",
-      "integrity": "sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==",
+      "version": "0.7.4",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.4.tgz",
+      "integrity": "sha512-l3BikUxvPOcn5E74dZiq5BGsTb5yEwhaTSzccU6t4sDOH8NWJCstKO5QT2CvtFoK6F0saL7p9xHAqHOlCPJygA==",
       "engines": {
         "node": ">= 8"
       }
@@ -1363,16 +1386,16 @@
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     },
     "node_modules/v8-to-istanbul": {
-      "version": "7.1.2",
-      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-7.1.2.tgz",
-      "integrity": "sha512-TxNb7YEUwkLXCQYeudi6lgQ/SZrzNO4kMdlqVxaZPUIUjCv6iSSypUQX70kNBSERpQ8fk48+d61FXk+tgqcWow==",
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-9.0.1.tgz",
+      "integrity": "sha512-74Y4LqY74kLE6IFyIjPtkSTWzUZmj8tdHT9Ii/26dvQ6K9Dl2NbEfj0XgU2sHCtKgt5VupqhlO/5aWuqS+IY1w==",
       "dependencies": {
+        "@jridgewell/trace-mapping": "^0.3.12",
         "@types/istanbul-lib-coverage": "^2.0.1",
-        "convert-source-map": "^1.6.0",
-        "source-map": "^0.7.3"
+        "convert-source-map": "^1.6.0"
       },
       "engines": {
-        "node": ">=10.10.0"
+        "node": ">=10.12.0"
       }
     },
     "node_modules/which": {
@@ -1733,6 +1756,25 @@
       "resolved": "https://registry.npmjs.org/@istanbuljs/schema/-/schema-0.1.3.tgz",
       "integrity": "sha512-ZXRY4jNvVgSVQ8DL3LTcakaAtXwTVUxE81hslsyD2AtoXW/wVob10HkOJ1X/pAlcI7D+2YoZKg5do8G/w6RYgA=="
     },
+    "@jridgewell/resolve-uri": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.0.tgz",
+      "integrity": "sha512-F2msla3tad+Mfht5cJq7LSXcdudKTWCVYUgw6pLFOOHSTtZlj6SWNYAp+AhuqLmWdBO2X5hPrLcu8cVP8fy28w=="
+    },
+    "@jridgewell/sourcemap-codec": {
+      "version": "1.4.14",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.14.tgz",
+      "integrity": "sha512-XPSJHWmi394fuUuzDnGz1wiKqWfo1yXecHQMRf2l6hztTO+nPru658AyDngaBe7isIxEkRsPR3FZh+s7iVa4Uw=="
+    },
+    "@jridgewell/trace-mapping": {
+      "version": "0.3.14",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.14.tgz",
+      "integrity": "sha512-bJWEfQ9lPTvm3SneWwRFVLzrh6nhjwqw7TUFFBEMzwvg7t7PCDenf2lDwqo4NQXzdpgBXyFgDWnQA+2vkruksQ==",
+      "requires": {
+        "@jridgewell/resolve-uri": "^3.0.3",
+        "@jridgewell/sourcemap-codec": "^1.4.10"
+      }
+    },
     "@types/istanbul-lib-coverage": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.3.tgz",
@@ -2092,9 +2134,9 @@
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     },
     "istanbul-lib-coverage": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.0.0.tgz",
-      "integrity": "sha512-UiUIqxMgRDET6eR+o5HbfRYP1l0hqkWOs7vNxC/mggutCMUIhWMm8gAHb8tHlyfD3/l6rlgNA5cKdDzEAf6hEg=="
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.2.0.tgz",
+      "integrity": "sha512-eOeJ5BHCmHYvQK7xt9GkdHuzuCGS1Y6g9Gvnx3Ym33fz/HpLRYxiS0wHNr+m/MBC8B647Xt608vCDEvhl9c6Mw=="
     },
     "istanbul-lib-hook": {
       "version": "3.0.0",
@@ -2447,9 +2489,9 @@
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     },
     "source-map": {
-      "version": "0.7.3",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.3.tgz",
-      "integrity": "sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ=="
+      "version": "0.7.4",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.4.tgz",
+      "integrity": "sha512-l3BikUxvPOcn5E74dZiq5BGsTb5yEwhaTSzccU6t4sDOH8NWJCstKO5QT2CvtFoK6F0saL7p9xHAqHOlCPJygA=="
     },
     "spawn-wrap": {
       "version": "2.0.0",
@@ -2534,13 +2576,13 @@
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     },
     "v8-to-istanbul": {
-      "version": "7.1.2",
-      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-7.1.2.tgz",
-      "integrity": "sha512-TxNb7YEUwkLXCQYeudi6lgQ/SZrzNO4kMdlqVxaZPUIUjCv6iSSypUQX70kNBSERpQ8fk48+d61FXk+tgqcWow==",
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-9.0.1.tgz",
+      "integrity": "sha512-74Y4LqY74kLE6IFyIjPtkSTWzUZmj8tdHT9Ii/26dvQ6K9Dl2NbEfj0XgU2sHCtKgt5VupqhlO/5aWuqS+IY1w==",
       "requires": {
+        "@jridgewell/trace-mapping": "^0.3.12",
         "@types/istanbul-lib-coverage": "^2.0.1",
-        "convert-source-map": "^1.6.0",
-        "source-map": "^0.7.3"
+        "convert-source-map": "^1.6.0"
       }
     },
     "which": {
diff --git a/third_party/js_code_coverage/package.json b/third_party/js_code_coverage/package.json
index 8aef75f4ee169f..102fdd4d074ef6 100644
--- a/third_party/js_code_coverage/package.json
+++ b/third_party/js_code_coverage/package.json
@@ -4,8 +4,9 @@
   "author": "benreich@chromium.org",
   "dependencies": {
     "argparse": "2.0.1",
+    "istanbul-lib-coverage": "3.2.0",
     "nyc": "15.1.0",
-    "source-map": "0.7.3",
-    "v8-to-istanbul": "7.1.2"
+    "source-map": "0.7.4",
+    "v8-to-istanbul": "9.0.1"
   }
 }