diff --git a/packages/vitepress-plugin-git-changelog/src/vite/git.ts b/packages/vitepress-plugin-git-changelog/src/vite/git.ts
index 8f6a440..7397224 100644
--- a/packages/vitepress-plugin-git-changelog/src/vite/git.ts
+++ b/packages/vitepress-plugin-git-changelog/src/vite/git.ts
@@ -1,4 +1,3 @@
-import { posix, sep, win32 } from 'node:path'
 import { exec } from 'node:child_process'
 import { promisify } from 'node:util'
 
@@ -14,6 +13,7 @@ import {
   type CommitToStringsHandler,
   type RewritePathsBy,
   digestStringAsSHA256,
+  generateCommitPathsRegExp,
   normalizeGitLogPath,
   parseGitLogRefsAsTags,
   returnOrResolvePromise,
@@ -49,6 +49,7 @@ async function aggregateCommit(
   getReleaseTagsURL: CommitToStringsHandler,
   log: Commit,
   includeDirs: string[] = [],
+  includeExtensions: `.${string}`[] = [],
   optsRewritePaths?: Record<string, string>,
   optsRewritePathsByPatterns?: RewritePathsBy,
 ) {
@@ -77,11 +78,7 @@ async function aggregateCommit(
     new Set(
       files
         .filter((i) => {
-          // include is not set, it is /^.+\md$/
-          // include is set, it is /^(${include.join('|')})\/.+\md$/
-          // in another word, /^(includeItem1|includeItem2|includeItem3)\/.+\md$/
-          const regexp = new RegExp(`^${includeDirs.length > 0 ? `(${includeDirs.join('|')})${sep === win32.sep ? win32.sep : `\\${posix.sep}`}` : ''}.+\\.md$`)
-          return !!i[1]?.match(regexp)?.[0]
+          return !!i[1]?.match(generateCommitPathsRegExp(includeDirs, includeExtensions))?.[0]
         }),
     ),
   )
@@ -110,6 +107,7 @@ async function aggregateCommits(
   getReleaseTagsURL: CommitToStringsHandler,
   commits: SimpleGitCommit,
   includeDirs: string[] = [],
+  includeExtensions: `.${string}`[] = [],
   rewritePaths?: Record<string, string>,
   rewritePathsBy?: RewritePathsBy,
 ) {
@@ -144,7 +142,7 @@ async function aggregateCommits(
   const processedCommits = await Promise.all(
     transformedCommits.map(
       async (commit) => {
-        return aggregateCommit(getReleaseTagURL, getReleaseTagsURL, commit, includeDirs, rewritePaths, rewritePathsBy)
+        return aggregateCommit(getReleaseTagURL, getReleaseTagsURL, commit, includeDirs, includeExtensions, rewritePaths, rewritePathsBy)
       },
     ),
   )
@@ -157,6 +155,10 @@ export interface GitChangelogOptions {
    * When fetching git logs, what directories should be included?
    */
   includeDirs?: string[]
+  /**
+   * When fetching git logs, what extensions should be included?
+   */
+  includeExtensions?: `.${string}`[]
   /**
    * Your repository URL.
    * Yes, you can dynamically generate it.
@@ -248,6 +250,7 @@ export function GitChangelog(options: GitChangelogOptions = {}): Plugin {
     maxGitLogCount,
     maxConcurrentProcesses,
     includeDirs = [],
+    includeExtensions = [],
     repoURL = 'https://github.com/example/example',
     getReleaseTagURL = defaultReleaseTagURLHandler,
     getReleaseTagsURL = defaultReleaseTagsURLHandler,
@@ -313,6 +316,7 @@ export function GitChangelog(options: GitChangelogOptions = {}): Plugin {
         getReleaseTagsURL,
         gitLogsRaw.all,
         includeDirs,
+        includeExtensions,
         options.rewritePaths,
         options.rewritePathsBy,
       )
diff --git a/packages/vitepress-plugin-git-changelog/src/vite/helpers.test.ts b/packages/vitepress-plugin-git-changelog/src/vite/helpers.test.ts
index 4825f8e..df8eda7 100644
--- a/packages/vitepress-plugin-git-changelog/src/vite/helpers.test.ts
+++ b/packages/vitepress-plugin-git-changelog/src/vite/helpers.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from 'vitest'
 
 import type { Commit } from '../types'
-import { parseGitLogRefsAsTags, rewritePathsByPatterns, rewritePathsByRewritingExtension } from './helpers'
+import { generateCommitPathsRegExp, parseGitLogRefsAsTags, rewritePathsByPatterns, rewritePathsByRewritingExtension } from './helpers'
 
 describe('rewritePathsByRewritingExtension', () => {
   it('should rewrite paths', () => {
@@ -74,3 +74,18 @@ describe('parseGitLogRefsAsTags', () => {
     expect(parseGitLogRefsAsTags('tag: v1.0.0, tag: v1.0.1')).toEqual(['v1.0.0', 'v1.0.1'])
   })
 })
+
+describe('generateCommitPathsRegExp', () => {
+  it('default', () => {
+    expect(generateCommitPathsRegExp([], [])).toEqual(/^.+.md$/)
+  })
+  it('includeDirs', () => {
+    expect(generateCommitPathsRegExp(['docs', 'packages'], [])).toEqual(/^(docs|packages)\/.+.md$/)
+  })
+  it('includeExtensions', () => {
+    expect(generateCommitPathsRegExp([], ['.md', '.ts'])).toEqual(/^.+(.md|.ts)$/)
+  })
+  it('includeDirs and includeExtensions', () => {
+    expect(generateCommitPathsRegExp(['docs', 'packages'], ['.md', '.ts'])).toEqual(/^(docs|packages)\/.+(.md|.ts)$/)
+  })
+})
diff --git a/packages/vitepress-plugin-git-changelog/src/vite/helpers.ts b/packages/vitepress-plugin-git-changelog/src/vite/helpers.ts
index 13b7b87..082d848 100644
--- a/packages/vitepress-plugin-git-changelog/src/vite/helpers.ts
+++ b/packages/vitepress-plugin-git-changelog/src/vite/helpers.ts
@@ -1,4 +1,4 @@
-import { extname, relative } from 'node:path'
+import { extname, posix, relative, sep, win32 } from 'node:path'
 import { subtle } from 'uncrypto'
 import { normalizePath } from 'vite'
 import type { Commit } from '../types'
@@ -207,3 +207,16 @@ export function parseGitLogRefsAsTags(refs?: string): string[] {
 
   return tags.map(tag => tag.replace('tag: ', '').trim())
 }
+
+/**
+ * Generate RegExp for filtering out paths of commits.
+ *
+ * It follows the rules that:
+ * - includes is not set, it is /^.+.md$/
+ * - includeDirs is set, it is /^(${includeDirs.join('|')})\/.+.md$/
+ * - includeExtensions is set, it is /^.+(${includeExtensions.join('|')})$/
+ * - in another word, /^(includeDir1|includeDir2)\/.+(includeExtension1|includeExtensions2)$/
+ */
+export function generateCommitPathsRegExp(includeDirs: string[], includeExtensions: `.${string}`[]): RegExp {
+  return new RegExp(`^${includeDirs.length > 0 ? `(${includeDirs.join('|')})${sep === win32.sep ? win32.sep : `\\${posix.sep}`}` : ''}.+${includeExtensions.length > 0 ? `(${includeExtensions.join('|')})` : '.md'}$`)
+}