diff --git a/.github/workflows/docker-image-release.yml b/.github/workflows/docker-image-release.yml
index 7ab1b9c..3a82d8f 100644
--- a/.github/workflows/docker-image-release.yml
+++ b/.github/workflows/docker-image-release.yml
@@ -4,10 +4,6 @@ on:
   push:
     branches: ["main"]
 
-env:
-  BUILD_ARGS: |
-    RAILPACK_VERSION=0.4.0
-
 jobs:
   build-arm:
     runs-on: ubuntu-24.04-arm
@@ -18,7 +14,6 @@ jobs:
       - name: Build and push multi-arch Docker image
         uses: docker/build-push-action@v6
         with:
-          build-args: ${{ env.BUILD_ARGS }}
           file: Dockerfile
           platforms: linux/arm64
           push: false
@@ -84,7 +79,6 @@ jobs:
       - name: Build and push multi-arch Docker image
         uses: docker/build-push-action@v6
         with:
-          build-args: ${{ env.BUILD_ARGS }}
           file: Dockerfile
           platforms: linux/amd64,linux/arm64
           push: true
diff --git a/Dockerfile b/Dockerfile
index 1e873c8..a3d78e7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -39,4 +39,4 @@ ENV PATH="/usr/bin:$PATH"
 
 ARG RAILPACK_VERSION
 ENV RAILPACK_VERSION=${RAILPACK_VERSION}
-RUN curl -sSL https://railpack.com/install.sh | bash
+RUN curl -fsSL https://railpack.com/install.sh | bash