diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 08e6671..8c1560e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -28,7 +28,7 @@ jobs:
     - name: Write branch and commit info
       run: |
         branch=$(git rev-parse --abbrev-ref HEAD)
-        hash=$(git rev-parse --short=8 HEAD)
+        hash=$(git rev-parse --short=7 HEAD)
         echo "$branch.$hash" > app/src/main/assets/gakumas-local/version.txt
               
     - name: Grant execute permission for gradlew