diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 51ac31c..420ba92 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -27,12 +27,12 @@ jobs:
           echo "created=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> "$GITHUB_OUTPUT"
       
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.0.0
+        uses: docker/setup-buildx-action@v3
       
       # Login against a Docker registry except on PR
       # https://github.com/docker/login-action
       - name: Log into registry ghcr.io
-        uses: docker/login-action@v3.0.0
+        uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -40,10 +40,10 @@ jobs:
 
       - name: Build and push minimal-dotnet
         id: docker_build_minimal
-        uses: docker/build-push-action@v5.1.0
+        uses: docker/build-push-action@v6
         with:
           push: true
-          build-args: base_image=quay.io/jupyter/minimal-notebook
+          build-args: base_image=quay.io/jupyter/minimal-notebook:ubuntu-24.04
           tags: ghcr.io/pocki/jupyter-dotnet:minimal-dotnet8-latest, ghcr.io/pocki/jupyter-dotnet:minimal-dotnet8-${{ steps.prep.outputs.datetag }}, ghcr.io/pocki/jupyter-dotnet:minimal-dotnet8-${{  github.ref_name }}
           labels: |
             type: minimal
@@ -51,17 +51,17 @@ jobs:
             org.opencontainers.image.source=${{ github.event.repository.html_url }}
             org.opencontainers.image.created=${{ steps.prep.outputs.created }}
             org.opencontainers.image.revision=${{ github.sha }}
-          platforms: linux/amd64
+          platforms: linux/amd64,linux/arm64
       
       - name: Image digest minimal-dotnet
         run: echo ${{ steps.docker_build_minimal.outputs.digest }}
       
       - name: Build and push scipy-dotnet
         id: docker_build_scipy
-        uses: docker/build-push-action@v5.1.0
+        uses: docker/build-push-action@v6
         with:
           push: true
-          build-args: base_image=quay.io/jupyter/scipy-notebook
+          build-args: base_image=quay.io/jupyter/scipy-notebook:ubuntu-24.04
           tags: ghcr.io/pocki/jupyter-dotnet:scipy-dotnet8-latest, ghcr.io/pocki/jupyter-dotnet:scipy-dotnet8-${{ steps.prep.outputs.datetag }}, ghcr.io/pocki/jupyter-dotnet:scipy-dotnet8-${{  github.ref_name }}
           labels: |
             type: scipy
@@ -69,17 +69,17 @@ jobs:
             org.opencontainers.image.source=${{ github.event.repository.html_url }}
             org.opencontainers.image.created=${{ steps.prep.outputs.created }}
             org.opencontainers.image.revision=${{ github.sha }}
-          platforms: linux/amd64
+          platforms: linux/amd64,linux/arm64
      
       - name: Image digest scipy-dotnet
         run: echo ${{ steps.docker_build_scipy.outputs.digest }}
       
       - name: Build and push r-dotnet
         id: docker_build_r
-        uses: docker/build-push-action@v5.1.0
+        uses: docker/build-push-action@v6
         with:
           push: true
-          build-args: base_image=quay.io/jupyter/r-notebook
+          build-args: base_image=quay.io/jupyter/r-notebook:ubuntu-24.04
           tags: ghcr.io/pocki/jupyter-dotnet:r-dotnet8-latest, ghcr.io/pocki/jupyter-dotnet:r-dotnet8-${{ steps.prep.outputs.datetag }}, ghcr.io/pocki/jupyter-dotnet:r-dotnet8-${{  github.ref_name }}
           labels: |
             type: r
@@ -87,7 +87,7 @@ jobs:
             org.opencontainers.image.source=${{ github.event.repository.html_url }}
             org.opencontainers.image.created=${{ steps.prep.outputs.created }}
             org.opencontainers.image.revision=${{ github.sha }}
-          platforms: linux/amd64
+          platforms: linux/amd64,linux/arm64
       
       - name: Image digest r-dotnet
         run: echo ${{ steps.docker_build_r.outputs.digest }}
diff --git a/Dockerfile b/Dockerfile
index 409a6ac..2d12b64 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,8 @@
 ARG base_image=quay.io/jupyter/minimal-notebook
 FROM ${base_image} as base
 
+ARG TARGETPLATFORM
+ENV ARCHITECTURE $ARCHITECTURE
 ARG NB_USER=jovyan
 ARG NB_UID=1000
 ENV USER ${NB_USER}
@@ -41,11 +43,19 @@ RUN apt-get update \
         libgdiplus \
     && rm -rf /var/lib/apt/lists/*
 
-ENV DOTNET_SDK_VERSION 8.0.403
+ENV DOTNET_SDK_VERSION 8.0.404
+ENV DOTNET_SDK_CHECKSUM ''
 # Install .NET Core SDK
-RUN dotnet_sdk_version=8.0.403 \
-    && curl -SL --output dotnet.tar.gz https://dotnetcli.azureedge.net/dotnet/Sdk/$dotnet_sdk_version/dotnet-sdk-$dotnet_sdk_version-linux-x64.tar.gz \
-    && dotnet_sha512='7aa03678228b174f51c4535f18348cdf7a5d35e243b1f8cb28a4a30e402e47567d06df63c8f6da4bdc3c7e898f54f4acc08d9952bfa49d3f220d0353253ac3e9' \
+RUN if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \
+        ARCHITECTURE=x64; \
+        DOTNET_SDK_CHECKSUM='2f166f7f3bd508154d72d1783ffac6e0e3c92023ccc2c6de49d22b411fc8b9e6dd03e7576acc1bb5870a6951181129ba77f3bf94bb45fe9c70105b1b896b9bb9'; \
+    elif [ "$TARGETPLATFORM" = "linux/arm64" ]; then  \ 
+        ARCHITECTURE=arm64; \
+        DOTNET_SDK_CHECKSUM='d147ca2e6aad8bc751b522ae91399e0e3867c42d17f892e23c8dd086ab6ccb0c13319d9b89c024b5a61ffb298e95bcfc82d9256074ddace882145c9d5a4be071'; \
+    fi \
+    && dotnet_sdk_version=${DOTNET_SDK_VERSION} \
+    && curl -SL --output dotnet.tar.gz https://builds.dotnet.microsoft.com/dotnet/Sdk/$dotnet_sdk_version/dotnet-sdk-$dotnet_sdk_version-linux-${ARCHITECTURE}.tar.gz \
+    && dotnet_sha512=${DOTNET_SDK_CHECKSUM} \
     && echo "$dotnet_sha512 dotnet.tar.gz" | sha512sum -c - \
     && mkdir -p /usr/share/dotnet \
     && tar -ozxf dotnet.tar.gz -C /usr/share/dotnet \
diff --git a/README.md b/README.md
index 823703e..9f6cda0 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Every image type is also available with the build date in the tag do use static/
 
 On build there is always the latest available version of base image, .NET and dotnet interactive used.
 
-# .NET 6/.NET 7
+# .NET 6/.NET 7 (Out-of-support)
 
 .NET 6 kernel in tag 20220210 and later  
 .NET 7 kernel in tag 20230315 and later