diff --git a/.github/workflows/build_and_deploy.yml b/.github/workflows/build_and_deploy.yml
index 966ca0e26..4ff895c12 100644
--- a/.github/workflows/build_and_deploy.yml
+++ b/.github/workflows/build_and_deploy.yml
@@ -131,7 +131,7 @@ jobs:
         shell: bash
         run: |
           cargo set-version "$VERSION" --exclude voicevox_core_python_api --exclude download --exclude xtask
-          if ${{ matrix.whl_local_version }}; then cargo set-version "$VERSION+"${{ matrix.whl_local_version }} -p voicevox_core_python_api; fi
+          if ${{ !!matrix.whl_local_version }}; then cargo set-version "$VERSION+"${{ matrix.whl_local_version }} -p voicevox_core_python_api; fi
       - name: generate voicevox_core.h
         shell: bash
         run: cbindgen --crate voicevox_core_c_api -o ./voicevox_core.h