diff --git a/.github/workflows/calver-rollover.yml b/.github/workflows/calver-rollover.yml
deleted file mode 100644
index 1499889d..00000000
--- a/.github/workflows/calver-rollover.yml
+++ /dev/null
@@ -1,83 +0,0 @@
-name: CalVer rollover
-
-# release-please has no CalVer versioning strategy: its only options are default, always-bump-patch,
-# always-bump-minor, always-bump-major, service-pack and prerelease. The configuration here pins
-# always-bump-patch, which advances 2026.9.0 -> 2026.9.1 -> 2026.9.2 within a month but never moves
-# the year or the month on its own.
-#
-# This job moves them. Without it CalVer would be a number that merely looks like a date, and keeping
-# it truthful would be a manual edit somebody has to remember - the exact failure this project has
-# already been bitten by elsewhere.
-#
-# It opens a pull request rather than pushing, because main is protected in some of these
-# repositories and because a version change deserves a human glance.
-
-on:
-  schedule:
-    - cron: '7 3 1 * *'
-  workflow_dispatch:
-
-permissions:
-  contents: write
-  pull-requests: write
-
-concurrency:
-  group: calver-rollover
-  cancel-in-progress: false
-
-jobs:
-  rollover:
-    name: Open the month's version bump
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    env:
-      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-    steps:
-      - name: Check out
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-
-      - name: Decide whether the month moved
-        id: decide
-        run: |
-          set -euo pipefail
-          current=$(jq -r '."."' .release-please-manifest.json)
-          target="$(date -u +%Y).$(date -u +%-m).0"
-          echo "current=$current target=$target"
-          if [ "${current%.*}" = "${target%.*}" ]; then
-            echo "moved=false" >> "$GITHUB_OUTPUT"
-            echo "Already on ${target%.*}; nothing to do."
-          else
-            echo "moved=true" >> "$GITHUB_OUTPUT"
-            echo "target=$target" >> "$GITHUB_OUTPUT"
-          fi
-
-      - name: Apply the new version
-        if: steps.decide.outputs.moved == 'true'
-        run: |
-          set -euo pipefail
-          target='${{ steps.decide.outputs.target }}'
-          jq --arg v "$target" '."." = $v' .release-please-manifest.json > tmp && mv tmp .release-please-manifest.json
-          printf '%s\n' "$target" > version.txt
-          # Owns the VERSIONINFO block, which carries the number in two shapes and cannot be driven
-          # by release-please's generic updater.
-          python3 scripts/apply_version.py
-          python3 scripts/apply_version.py --check
-
-      - name: Open the pull request
-        if: steps.decide.outputs.moved == 'true'
-        run: |
-          set -euo pipefail
-          target='${{ steps.decide.outputs.target }}'
-          branch="chore/calver-$target"
-          if gh pr list --head "$branch" --state open --json number --jq 'length' | grep -qv '^0$'; then
-            echo "A pull request for $branch is already open."
-            exit 0
-          fi
-          git config user.name 'github-actions[bot]'
-          git config user.email '41898282+github-actions[bot]@users.noreply.github.com'
-          git checkout -b "$branch"
-          git commit -aqm "chore(release): roll the calendar version to $target"
-          git push -u origin "$branch"
-          gh pr create --base "${GITHUB_REF_NAME}" --head "$branch" \
-            --title "chore(release): roll the calendar version to $target" \
-            --body "The calendar month moved, and release-please cannot advance a CalVer year or month on its own; its always-bump-patch strategy only walks the last component. Merging this resets the series to \`$target\` so the version keeps meaning what it says."
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 8e5a3fbb..e4df6aab 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2026.9.0"
+  ".": "0.0.17"
 }
diff --git a/release-please-config.json b/release-please-config.json
index b2cadb60..7bf989ba 100644
--- a/release-please-config.json
+++ b/release-please-config.json
@@ -3,7 +3,6 @@
   "packages": {
     ".": {
       "release-type": "simple",
-      "versioning": "always-bump-patch",
       "package-name": "MetasequoiaImeWindows",
       "include-component-in-tag": false,
       "include-v-in-tag": true,
diff --git a/src/IME/MetasequoiaIME.rc b/src/IME/MetasequoiaIME.rc
index 7986610a..e80aee7a 100644
--- a/src/IME/MetasequoiaIME.rc
+++ b/src/IME/MetasequoiaIME.rc
@@ -35,8 +35,8 @@ IDI_PUNCTUATION_OFF     ICON                    "..\\..\\image\\PunctuationOff.i
 //
 
 IDR_VERSION2 VERSIONINFO
- FILEVERSION 2026,9,0,0
- PRODUCTVERSION 2026,9,0,0
+ FILEVERSION 0,0,17,0
+ PRODUCTVERSION 0,0,17,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -53,12 +53,12 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "MSFT"
             VALUE "FileDescription", "The Metasequoia code of Windows 11 IME"
-            VALUE "FileVersion", "2026.9.0.0"
+            VALUE "FileVersion", "0.0.17.0"
             VALUE "InternalName", "MetasequoiaIM.dll"
             VALUE "LegalCopyright", "Copyright (C)"
             VALUE "OriginalFilename", "MetasequoiaIM.dll"
             VALUE "ProductName", "MetasequoiaIME"
-            VALUE "ProductVersion", "2026.9.0.0"
+            VALUE "ProductVersion", "0.0.17.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/version.txt b/version.txt
index e36a169c..cd231804 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-2026.9.0
+0.0.17