diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index a77637b..d74b763 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -31,9 +31,7 @@ jobs:
           platforms: linux/amd64,linux/arm64
           push: true
           tags: datacatering/fluentd-elasticsearch:${{ env.VERSION }}
-          build-args:
-            - "FLUENTD_VERSION=${{ env.VERSION }}"
-            - "PLUGIN_ELASTICSEARCH_VERSION=${{ env.PLUGIN_ELASTICSEARCH_VERSION }}"
+          build-args: "FLUENTD_VERSION=${{ env.VERSION }},PLUGIN_ELASTICSEARCH_VERSION=${{ env.PLUGIN_ELASTICSEARCH_VERSION }}"
       - name: Build and push - gcs
         uses: docker/build-push-action@v6
         with:
@@ -41,6 +39,4 @@ jobs:
           platforms: linux/amd64,linux/arm64
           push: true
           tags: datacatering/fluentd-gcs:${{ env.VERSION }}
-          build-args:
-            - "FLUENTD_VERSION=${{ env.VERSION }}"
-            - "PLUGIN_GCS_VERSION=${{ env.PLUGIN_GCS_VERSION }}"
+          build-args: "FLUENTD_VERSION=${{ env.VERSION }},PLUGIN_GCS_VERSION=${{ env.PLUGIN_GCS_VERSION }}"