diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0d2eccf2..4529978d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,7 +26,7 @@ on:
         default: false
 
 env:
-  AIVISSPEECH_ENGINE_VERSION: "1.0.0"
+  AIVISSPEECH_ENGINE_VERSION: "1.1.0-dev"
   AIVISSPEECH_EDITOR_VERSION:
     |- # releaseタグ名か、workflow_dispatchでのバージョン名か、999.999.999-developが入る
     ${{ github.event.release.tag_name || github.event.inputs.version || '999.999.999-develop' }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e8916a91..f42143ec 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ on:
 
 env:
   AIVISSPEECH_ENGINE_REPO: "Aivis-Project/AivisSpeech-Engine"
-  AIVISSPEECH_ENGINE_VERSION: "1.0.0"
+  AIVISSPEECH_ENGINE_VERSION: "1.1.0-dev"
 
 defaults:
   run: