diff --git a/.licenserc.json b/.licenserc.json
new file mode 100644
index 000000000000..26fd7542a08b
--- /dev/null
+++ b/.licenserc.json
@@ -0,0 +1,22 @@
+{
+  "**/*.{mjs,js,ts,rs}": "Copyright 2018-2025 the Deno authors. MIT license.",
+  "ignore": [
+    "cli/testdata/",
+    "cli\\testdata\\",
+    "dotenv/testdata/",
+    "dotenv\\testdata\\",
+    "fs/testdata/",
+    "fs\\testdata\\",
+    "http/testdata/",
+    "http\\testdata\\",
+    "crypto/_wasm/target/",
+    "crypto\\_wasm\\target\\",
+    "crypto/_wasm/lib/",
+    "crypto\\_wasm\\lib\\",
+    ".git",
+    "docs/**",
+    "docs\\**",
+    "_tmp/",
+    "_tmp\\"
+  ]
+}
diff --git a/_tools/check_browser_compat.ts b/_tools/check_browser_compat.ts
index 61e0fdca84da..46879693e094 100644
--- a/_tools/check_browser_compat.ts
+++ b/_tools/check_browser_compat.ts
@@ -6,13 +6,13 @@
  *
  * Run using: deno run --allow-read --allow-run _tools/check_browser_compat.ts
  */
-
+import LICENSE_JSON from "../.licenserc.json" with { type: "json" };
 import { walk } from "../fs/walk.ts";
-import { COPYRIGHT } from "./check_licence.ts";
 
 const ROOT = new URL("../", import.meta.url);
 const SKIP = [/(test|bench|\/_|\\_|testdata|version.ts)/];
 const DECLARATION = "// This module is browser compatible.";
+const COPYRIGHT = `// ${LICENSE_JSON["**/*.{mjs,js,ts,rs}"]}`;
 
 async function isBrowserCompatible(filePath: string): Promise<boolean> {
   return (await new Deno.Command(Deno.execPath(), {
diff --git a/_tools/check_licence.ts b/_tools/check_licence.ts
deleted file mode 100644
index 2e9ea8ab2a5f..000000000000
--- a/_tools/check_licence.ts
+++ /dev/null
@@ -1,71 +0,0 @@
-// deno-lint-ignore-file no-console
-// Copyright 2018-2025 the Deno authors. MIT license.
-import { walk } from "../fs/walk.ts";
-import { globToRegExp } from "../path/glob_to_regexp.ts";
-
-const EXTENSIONS = [".mjs", ".js", ".ts", ".rs"];
-const EXCLUDED_DIRS = [
-  "**/cli/testdata",
-  "**/dotenv/testdata",
-  "**/fs/testdata",
-  "**/http/testdata",
-  "**/crypto/_wasm/target",
-  "**/crypto/_wasm/lib",
-  "**/.git",
-  "**/docs/**",
-  "**/_tmp",
-];
-
-const ROOT = new URL("../", import.meta.url);
-const CHECK = Deno.args.includes("--check");
-const FIRST_YEAR = 2018;
-const CURRENT_YEAR = new Date().getFullYear();
-const RX_COPYRIGHT = new RegExp(
-  `// Copyright ([0-9]{4})-([0-9]{4}) the Deno authors\\. MIT license\\.\n`,
-);
-export const COPYRIGHT =
-  `// Copyright ${FIRST_YEAR}-${CURRENT_YEAR} the Deno authors. MIT license.`;
-
-let failed = false;
-
-for await (
-  const { path } of walk(ROOT, {
-    exts: EXTENSIONS,
-    skip: EXCLUDED_DIRS.map((path) => globToRegExp(path)),
-    includeDirs: false,
-  })
-) {
-  const content = await Deno.readTextFile(path);
-  const match = content.match(RX_COPYRIGHT);
-
-  if (!match) {
-    if (CHECK) {
-      console.error(`Missing copyright header: ${path}`);
-      failed = true;
-    } else {
-      const contentWithCopyright = COPYRIGHT + "\n" + content;
-      await Deno.writeTextFile(path, contentWithCopyright);
-      console.log("Copyright header automatically added to " + path);
-    }
-  } else if (
-    (match[1] && parseInt(match[1]) !== FIRST_YEAR) ||
-    (match[2] && parseInt(match[2]) !== CURRENT_YEAR)
-  ) {
-    if (CHECK) {
-      console.error(`Incorrect copyright year: ${path}`);
-      failed = true;
-    } else {
-      const index = match.index ?? 0;
-      const contentWithoutCopyright = content.replace(match[0], "");
-      const contentWithCopyright = contentWithoutCopyright.substring(0, index) +
-        COPYRIGHT + "\n" + contentWithoutCopyright.substring(index);
-      await Deno.writeTextFile(path, contentWithCopyright);
-      console.log("Copyright header automatically updated in " + path);
-    }
-  }
-}
-
-if (failed) {
-  console.info(`Copyright header should be "${COPYRIGHT}"`);
-  Deno.exit(1);
-}
diff --git a/deno.json b/deno.json
index f901c611cac3..b20bc046647b 100644
--- a/deno.json
+++ b/deno.json
@@ -12,8 +12,9 @@
     "test:with-unsafe-proto": "deno test --unstable-http --unstable-webgpu --unstable-fs --unstable-unsafe-proto --doc --allow-all --parallel --coverage --trace-leaks --clean",
     "test:browser": "git grep --name-only \"This module is browser compatible.\" | grep -v deno.json | grep -v .github/workflows | grep -v _tools | grep -v encoding/README.md | grep -v media_types/vendor/update.ts | xargs deno check --config browser-compat.tsconfig.json",
     "test:node": "(cd _tools/node_test_runner && npm install) && node --import ./_tools/node_test_runner/register_deno_shim.mjs ./_tools/node_test_runner/run_test.mjs",
+    "fmt:licence-headers": " deno run --allow-read jsr:@kt3k/license-checker@3.3.1/main --quiet",
+    "lint:deprecations": "deno run --allow-read --allow-net --allow-env ./_tools/check_deprecation.ts",
     "test:bun": "(cd _tools/node_test_runner && bun install) && cp _tools/node_test_runner/tsconfig_for_bun.json ./tsconfig.json && bun test --require ./_tools/node_test_runner/register_deno_shim.mjs _tools/node_test_runner/run_test.mjs && rm tsconfig.json",
-    "fmt:licence-headers": "deno run --allow-read --allow-write ./_tools/check_licence.ts",
     "lint:circular": "deno run --allow-env --allow-read --allow-write --allow-net=deno.land,jsr.io ./_tools/check_circular_package_dependencies.ts",
     "lint:mod-exports": "deno run --allow-env --allow-read ./_tools/check_mod_exports.ts",
     "lint:tools-types": "deno check _tools/*.ts",