diff --git a/demo/markdownlint-browser.js b/demo/markdownlint-browser.js
index d1eb6438..cab12d80 100644
--- a/demo/markdownlint-browser.js
+++ b/demo/markdownlint-browser.js
@@ -1657,7 +1657,7 @@ module.exports = {
 const path = __webpack_require__(/*! node:path */ "?9a52");
 const { promisify } = __webpack_require__(/*! node:util */ "?39e5");
 const micromark = __webpack_require__(/*! ../helpers/micromark-parse.cjs */ "../helpers/micromark-parse.cjs");
-// const { deprecatedRuleNames } = require("./constants");
+const { version } = __webpack_require__(/*! ./constants */ "../lib/constants.js");
 const rules = __webpack_require__(/*! ./rules */ "../lib/rules.js");
 const helpers = __webpack_require__(/*! ../helpers */ "../helpers/helpers.js");
 const cache = __webpack_require__(/*! ./cache */ "../lib/cache.js");
@@ -2177,6 +2177,7 @@ function lintContent(
   const parsersNone = Object.freeze({});
   const paramsBase = {
     name,
+    version,
     "lines": Object.freeze(lines),
     "frontMatterLines": Object.freeze(frontMatterLines)
   };
@@ -2861,7 +2862,7 @@ function readConfigSync(file, parsers, fs) {
  * @returns {string} SemVer string.
  */
 function getVersion() {
-  return (__webpack_require__(/*! ./constants */ "../lib/constants.js").version);
+  return version;
 }
 
 // Export a/synchronous/Promise APIs
@@ -2898,6 +2899,7 @@ module.exports = markdownlint;
  * @property {readonly string[]} lines File/string lines.
  * @property {readonly string[]} frontMatterLines Front matter lines.
  * @property {RuleConfiguration} config Rule configuration.
+ * @property {string} version Version of the markdownlint library.
  */
 
 /* eslint-enable jsdoc/valid-types */
diff --git a/doc/CustomRules.md b/doc/CustomRules.md
index 36616066..3921f518 100644
--- a/doc/CustomRules.md
+++ b/doc/CustomRules.md
@@ -85,6 +85,7 @@ A rule is implemented as an `Object`:
       front matter (not present in `lines`).
     - `config` is an `Object` corresponding to the rule's entry in
       `options.config` (if present).
+    - `version` is a `String` that corresponds to the version of `markdownlint`
   - `onError` is a function that takes a single `Object` parameter with one
     required and four optional properties:
     - `lineNumber` is a required `Number` specifying the 1-based line number of
diff --git a/example/typescript/type-check.ts b/example/typescript/type-check.ts
index f99c7f7f..b33351da 100644
--- a/example/typescript/type-check.ts
+++ b/example/typescript/type-check.ts
@@ -136,7 +136,8 @@ const testRule: markdownlint.Rule = {
       "frontMatterLines": [
         "three"
       ],
-      "config": options.config
+      "config": options.config,
+      "version": "1.2.3"
     };
     assert(ruleParams);
     let ruleOnErrorInfo: markdownlint.RuleOnErrorInfo;
diff --git a/lib/markdownlint.d.ts b/lib/markdownlint.d.ts
index f3c98fe4..f7bbb380 100644
--- a/lib/markdownlint.d.ts
+++ b/lib/markdownlint.d.ts
@@ -77,6 +77,10 @@ type RuleParams = {
      * Rule configuration.
      */
     config: RuleConfiguration;
+    /**
+     * Version of the markdownlint library.
+     */
+    version: string;
 };
 /**
  * Markdown parser data.
diff --git a/lib/markdownlint.js b/lib/markdownlint.js
index ff51c07f..cfdf50b8 100644
--- a/lib/markdownlint.js
+++ b/lib/markdownlint.js
@@ -5,7 +5,7 @@
 const path = require("node:path");
 const { promisify } = require("node:util");
 const micromark = require("../helpers/micromark-parse.cjs");
-// const { deprecatedRuleNames } = require("./constants");
+const { version } = require("./constants");
 const rules = require("./rules");
 const helpers = require("../helpers");
 const cache = require("./cache");
@@ -525,6 +525,7 @@ function lintContent(
   const parsersNone = Object.freeze({});
   const paramsBase = {
     name,
+    version,
     "lines": Object.freeze(lines),
     "frontMatterLines": Object.freeze(frontMatterLines)
   };
@@ -1209,7 +1210,7 @@ function readConfigSync(file, parsers, fs) {
  * @returns {string} SemVer string.
  */
 function getVersion() {
-  return require("./constants").version;
+  return version;
 }
 
 // Export a/synchronous/Promise APIs
@@ -1246,6 +1247,7 @@ module.exports = markdownlint;
  * @property {readonly string[]} lines File/string lines.
  * @property {readonly string[]} frontMatterLines Front matter lines.
  * @property {RuleConfiguration} config Rule configuration.
+ * @property {string} version Version of the markdownlint library.
  */
 
 /* eslint-enable jsdoc/valid-types */
diff --git a/test/markdownlint-test-custom-rules.js b/test/markdownlint-test-custom-rules.js
index f42b3321..8f4a8a20 100644
--- a/test/markdownlint-test-custom-rules.js
+++ b/test/markdownlint-test-custom-rules.js
@@ -1338,6 +1338,30 @@ test("customRulesOnErrorInvalidHandledSync", (t) => {
   t.deepEqual(actualResult, expectedResult, "Undetected issues.");
 });
 
+test("customRulesVersion", (t) => new Promise((resolve) => {
+  t.plan(2);
+  // eslint-disable-next-line jsdoc/valid-types
+  /** @type import("../lib/markdownlint").Options */
+  const options = {
+    "customRules": [
+      {
+        "names": [ "name" ],
+        "description": "description",
+        "tags": [ "tag" ],
+        "parser": "none",
+        "function": function stringName(params) {
+          t.is(params.version, version, "Incorrect version");
+        }
+      }
+    ],
+    "files": "doc/CustomRules.md"
+  };
+  markdownlint(options, function callback(err) {
+    t.falsy(err);
+    resolve();
+  });
+}));
+
 test("customRulesFileName", (t) => new Promise((resolve) => {
   t.plan(2);
   // eslint-disable-next-line jsdoc/valid-types