diff --git a/.github/workflows/cd_research_on_debian_bookworm.yml b/.github/workflows/cd_research_on_debian_bookworm.yml
index 92a1a8fa2..4bc23b5cc 100644
--- a/.github/workflows/cd_research_on_debian_bookworm.yml
+++ b/.github/workflows/cd_research_on_debian_bookworm.yml
@@ -49,7 +49,7 @@ jobs:
       - name: Generate Installer
         run: |
           packages/debian/package.sh
-          cp ../mogan*.deb mogan-research-v1.2.9.2-rc3-debian12.deb
+          cp ../mogan*.deb mogan-research-v1.2.9.2-rc4-debian12.deb
       - name: Upload 
         uses: actions/upload-artifact@v3
         if: ${{ !startsWith(github.ref, 'refs/tags/') }}
diff --git a/xmake/vars.lua b/xmake/vars.lua
index 6cbc91f15..547fd5d48 100644
--- a/xmake/vars.lua
+++ b/xmake/vars.lua
@@ -11,7 +11,7 @@
 -- in the root directory or <http://www.gnu.org/licenses/gpl-3.0.html>.
 
 TEXMACS_VERSION = "2.1.2"
-XMACS_VERSION="1.2.9.2-rc3"
+XMACS_VERSION="1.2.9.2-rc4"
 CONFIG_USER = "XmacsLabs"
 DEVEL_VERSION = TEXMACS_VERSION
 DEVEL_RELEASE = 1