diff --git a/.github/workflows/create-release.yml b/.github/workflows/create-release.yml
index 0a795fb..6e6c242 100644
--- a/.github/workflows/create-release.yml
+++ b/.github/workflows/create-release.yml
@@ -16,6 +16,9 @@ jobs:
           command: package("${{ github.ref_name }}", "ihn-psych.mltbx")
       - name: create GitHub release
         run: |
-          gh release create "${{ github.ref_name }}" ihn-psych.mltbx
+          echo "function v = version, v = '${{ github.ref_name }}'; end" >toolbox/+ihn/version.m
+          (cd toolbox/ && zip -r ../"$ZIPFILE" +ihn/)
+          gh release create "${{ github.ref_name }}" *.mltbx "$ZIPFILE"
         env:
+          ZIPFILE: ihn-psych-${{ github.ref_name }}.zip
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}