diff --git a/.github/workflows/bumpversion.yml b/.github/workflows/bumpversion.yml
index f4dc9b7..a37084a 100644
--- a/.github/workflows/bumpversion.yml
+++ b/.github/workflows/bumpversion.yml
@@ -1,16 +1,43 @@
-name: Bump version
+name: Update file on PR merge
 on:
-  push:
+  pull_request:
     branches:
       - main
+    types: closed
+
 jobs:
-  build:
+  update_version:
+    if: github.event.pull_request.merged == true
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - name: checkout
+        uses: actions/checkout@v3
+        with:
+          # Fetch full depth, otherwise the last step overwrites the last commit's parent, essentially removing the graph.
+          fetch-depth: 0
+
+      - name: GenerateTag
+        id: name_tag
+        uses: mathieudutour/github-tag-action@v6.1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          create_annotated_tag: true
+          default_bump: patch
+          dry_run: true
+          tag_prefix: manic-
+      - name: Update version.txt
+        run: |
+          echo "${{ steps.name_tag.outputs.new_tag }}" > version.txt
+      - name: Amend the last commit
+        run: |
+          git config --global user.email "gitbot@openrct2.org"
+          git config --global user.name "OpenRCT2 git bot"
+          git commit -a --amend --no-edit
+          git push --force-with-lease
+          echo "Complete"name: Bump version
       - name: Bump version and push tag
-        id: tag_version
-        uses: mathieudutour/github-tag-action@v5.5
+        id: really_tag_version
+        uses: mathieudutour/github-tag-action@v6.1
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           create_annotated_tag: true
diff --git a/checkout_externals b/checkout_externals
index 48bce24..536c64e 100755
--- a/checkout_externals
+++ b/checkout_externals
@@ -12,7 +12,7 @@ from __future__ import print_function
 
 import sys
 import traceback
-
+import os
 import manic
 
 if sys.hexversion < 0x02070000:
@@ -26,6 +26,13 @@ if sys.hexversion < 0x02070000:
 
 if __name__ == '__main__':
     ARGS = manic.checkout.commandline_arguments()
+    if ARGS.version:
+        version_info = ''
+        version_file_path = os.path.join(os.path.dirname(__file__),'version.txt')
+        with open(version_file_path) as f:
+            version_info = f.readlines()[0].strip()
+        print(version_info)
+        sys.exit(0)
     try:
         RET_STATUS, _ = manic.checkout.main(ARGS)
         sys.exit(RET_STATUS)
diff --git a/manic/checkout.py b/manic/checkout.py
index 3f5537a..25c05ea 100755
--- a/manic/checkout.py
+++ b/manic/checkout.py
@@ -304,6 +304,9 @@ def commandline_arguments(args=None):
                         'used up to two times, increasing the '
                         'verbosity level each time.')
 
+    parser.add_argument('--version', action='store_true', default=False,
+                        help='Print manage_externals version and exit.')
+    
     parser.add_argument('--svn-ignore-ancestry', action='store_true', default=False,
                         help='By default, subversion will abort if a component is '
                         'already checked out and there is no common ancestry with '
diff --git a/version.txt b/version.txt
new file mode 100644
index 0000000..cbda54c
--- /dev/null
+++ b/version.txt
@@ -0,0 +1 @@
+manic-1.2.24-3-gba00e50