diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml
index 877d317..20a31f5 100644
--- a/.gitea/workflows/build.yaml
+++ b/.gitea/workflows/build.yaml
@@ -26,7 +26,7 @@ jobs:
         env:
           CONTAINER_REGISTRY: ${{ vars.CONTAINER_REGISTRY }}
         run: |
-          make registry-bootstrap-stage0 PLATFORM=linux/amd64 REGISTRY_USERNAME=$CONTAINER_REGISTRY/okami101/stagex
+          make registry-bootstrap-stage0 REGISTRY_USERNAME=$CONTAINER_REGISTRY/okami101/stagex
 
       - name: Restore stage1 cache
         uses: actions/cache/restore@v4
@@ -45,7 +45,7 @@ jobs:
         env:
           CONTAINER_REGISTRY: ${{ vars.CONTAINER_REGISTRY }}
         run: |
-          make registry-bootstrap-stage1 PLATFORM=linux/amd64 REGISTRY_USERNAME=$CONTAINER_REGISTRY/okami101/stagex
+          make registry-bootstrap-stage1 REGISTRY_USERNAME=$CONTAINER_REGISTRY/okami101/stagex
 
       - name: Restore stage2 cache
         uses: actions/cache/restore@v4
@@ -64,7 +64,7 @@ jobs:
         env:
           CONTAINER_REGISTRY: ${{ vars.CONTAINER_REGISTRY }}
         run: |
-          make registry-bootstrap-stage2 PLATFORM=linux/amd64 REGISTRY_USERNAME=$CONTAINER_REGISTRY/okami101/stagex
+          make registry-bootstrap-stage2 REGISTRY_USERNAME=$CONTAINER_REGISTRY/okami101/stagex
 
       - name: Restore stage3 cache
         uses: actions/cache/restore@v4