diff --git a/.github/workflows/nightly_old_linux_arm64.yml b/.github/workflows/nightly_old_linux_arm64.yml
new file mode 100644
index 00000000000..adee12b47fd
--- /dev/null
+++ b/.github/workflows/nightly_old_linux_arm64.yml
@@ -0,0 +1,38 @@
+on:
+  workflow_dispatch:
+  schedule:
+    - cron:  '0 9 * * *'
+
+name: Nightly Release Old Linux arm64 using Earthly
+    
+jobs:
+  build:
+    name: build and package nightly release
+    runs-on: [self-hosted, Linux, ARM64]
+    timeout-minutes: 90
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: get commit SHA
+        run:  echo "SHA=$(git rev-parse --short "$GITHUB_SHA")" >> $GITHUB_ENV
+        
+      - name: get date
+        run: echo "DATE=$(date "+%Y-%m-%d")" >> $GITHUB_ENV
+        
+      - name: build file name
+        env:
+            DATE: ${{ env.DATE }}
+            SHA: ${{ env.SHA }}
+        run: echo "RELEASE_FOLDER_NAME=roc_nightly-old_linux_arm64-$DATE-$SHA" >> $GITHUB_ENV
+
+      - run: earthly --version
+
+      - name: build release with earthly
+        run: earthly +build-nightly-release  --RELEASE_FOLDER_NAME=${{ env.RELEASE_FOLDER_NAME }} --ZIG_ARCH=aarch64
+
+      - name: Upload roc nightly tar. Actually uploading to github releases has to be done manually.
+        uses: actions/upload-artifact@v3
+        with:
+           name: ${{ env.RELEASE_FOLDER_NAME }}.tar.gz
+           path: ${{ env.RELEASE_FOLDER_NAME }}.tar.gz
+           retention-days: 4
diff --git a/.github/workflows/nightly_linux_x86_64_earthly.yml b/.github/workflows/nightly_old_linux_x86_64.yml
similarity index 95%
rename from .github/workflows/nightly_linux_x86_64_earthly.yml
rename to .github/workflows/nightly_old_linux_x86_64.yml
index 2d055307e7f..03440f73e25 100644
--- a/.github/workflows/nightly_linux_x86_64_earthly.yml
+++ b/.github/workflows/nightly_old_linux_x86_64.yml
@@ -31,7 +31,7 @@ jobs:
       - run: earthly --version
 
       - name: build release with earthly
-        run: earthly +build-nightly-release  --RELEASE_FOLDER_NAME=${{ env.RELEASE_FOLDER_NAME }}
+        run: earthly +build-nightly-release  --RELEASE_FOLDER_NAME=${{ env.RELEASE_FOLDER_NAME }} --RUSTFLAGS="-C target-cpu=x86-64"
 
       - name: Upload roc nightly tar. Actually uploading to github releases has to be done manually.
         uses: actions/upload-artifact@v3
diff --git a/Earthfile b/Earthfile
index e69c3364e7c..90aa1b5d702 100644
--- a/Earthfile
+++ b/Earthfile
@@ -13,11 +13,12 @@ install-other-libs:
     RUN apt -y install unzip # for www/build.sh
 
 install-zig-llvm:
+    ARG ZIG_ARCH
     FROM +install-other-libs
     # zig
-    RUN wget -c https://ziglang.org/download/0.9.1/zig-linux-x86_64-0.9.1.tar.xz --no-check-certificate
-    RUN tar -xf zig-linux-x86_64-0.9.1.tar.xz
-    RUN ln -s /earthbuild/zig-linux-x86_64-0.9.1/zig /bin/zig
+    RUN wget -c https://ziglang.org/download/0.9.1/zig-linux-$ZIG_ARCH-0.9.1.tar.xz --no-check-certificate
+    RUN tar -xf zig-linux-$ZIG_ARCH-0.9.1.tar.xz
+    RUN ln -s /earthbuild/zig-linux-$ZIG_ARCH-0.9.1/zig /bin/zig
     # zig builtins wasm tests
     RUN apt -y install build-essential
     # llvm
@@ -39,16 +40,19 @@ install-zig-llvm:
     ENV CARGO_INCREMENTAL=0 # no need to recompile package when using new function
 
 copy-dirs:
-    FROM +install-zig-llvm
+    ARG ZIG_ARCH
+    FROM +install-zig-llvm --ZIG_ARCH=$ZIG_ARCH
     COPY --dir crates examples Cargo.toml Cargo.lock version.txt .cargo www rust-toolchain.toml ./
 
 build-nightly-release:
     ARG RELEASE_FOLDER_NAME
-    FROM +copy-dirs
+    ARG RUSTFLAGS
+    ARG ZIG_ARCH=x86_64
+    FROM +copy-dirs --ZIG_ARCH=$ZIG_ARCH
     COPY --dir .git LICENSE LEGAL_DETAILS ci ./
     # version.txt is used by the CLI: roc --version
     RUN ./ci/write_version.sh
-    RUN RUSTFLAGS="-C target-cpu=x86-64" cargo build --profile=release-with-lto --locked --bin roc
+    RUN RUSTFLAGS=$RUSTFLAGS cargo build --profile=release-with-lto --locked --bin roc
     # strip debug info
     RUN strip ./target/release-with-lto/roc
     RUN ./ci/package_release.sh $RELEASE_FOLDER_NAME