diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e36136a..69d0d2d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,8 +10,8 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        version: [v2.0.0-alpha.130, latest, ""]
+        os: [ubuntu-latest, macos-13, macos-latest, windows-latest]
+        version: [v2.0.0-alpha.130, v2.0.0-alpha.164, latest, ""]
 
     runs-on: ${{ matrix.os }}
 
diff --git a/action.yml b/action.yml
index 1f57767..2851022 100644
--- a/action.yml
+++ b/action.yml
@@ -32,16 +32,70 @@ runs:
       run: |
         TOIT_VERSION=${{ inputs.toit-version }}
 
-        if [[ "$RUNNER_OS" = "Linux" ]]; then
-          TOIT_FILE=toit-linux.tar.gz
-        elif [[ "$RUNNER_OS" = "macOS" ]]; then
-          TOIT_FILE=toit-macos.tar.gz
-        elif [[ "$RUNNER_OS" = "Windows" ]]; then
-          TOIT_FILE=toit-windows.tar.gz
+        # Use sort -V to compare versions.
+        if [[ "$(echo -e "v2.0.0-alpha.163"\n$TOIT_VERSION" | sort -V | tail -n 1)" != "$TOIT_VERSION" ]]; then
+          if [[ "$RUNNER_OS" = "Linux" ]]; then
+            case "$(uname -m)" in
+              x86_64)
+                TOIT_FILE=toit-linux.tar.gz
+                ;;
+              armv7l)
+                TOIT_FILE=toit-rpi.tar.gz
+                ;;
+              aarch64)
+                TOIT_FILE=toit-aarch64.tar.gz
+                ;;
+              *)
+                echo "UNSUPPORTED ARCHITECTURE: $(uname -m)"
+                exit 1
+                ;;
+            esac
+          elif [[ "$RUNNER_OS" = "macOS" ]]; then
+            TOIT_FILE=toit-macos.tar.gz
+          elif [[ "$RUNNER_OS" = "Windows" ]]; then
+            TOIT_FILE=toit-windows.tar.gz
+          else
+            echo "UNSUPPORTED RUNNER: $RUNNER_OS"
+            exit 1
+          fi
         else
-          echo "UNSUPPORTED RUNNER: $RUNNER_OS"
-          exit 1
+          if [[ "$RUNNER_OS" = "Linux" ]]; then
+            case "$(uname -m)" in
+              x86_64)
+                TOIT_FILE=toit-linux-x64.tar.gz
+                ;;
+              armv7l)
+                TOIT_FILE=toit-linux-armv7.tar.gz
+                ;;
+              aarch64)
+                TOIT_FILE=toit-linux-aarch64.tar.gz
+                ;;
+              *)
+                echo "UNSUPPORTED ARCHITECTURE: $(uname -m)"
+                exit 1
+                ;;
+            esac
+          elif [[ "$RUNNER_OS" = "macOS" ]]; then
+            case "$(uname -m)" in
+              x86_64)
+                TOIT_FILE=toit-macos-x64.tar.gz
+                ;;
+              arm64)
+                TOIT_FILE=toit-macos-aarch64.tar.gz
+                ;;
+              *)
+                echo "UNSUPPORTED ARCHITECTURE: $(uname -m)"
+                exit 1
+                ;;
+            esac
+          elif [[ "$RUNNER_OS" = "Windows" ]]; then
+            TOIT_FILE=toit-windows-x64.tar.gz
+          else
+            echo "UNSUPPORTED RUNNER: $RUNNER_OS"
+            exit 1
+          fi
         fi
+
         echo "TOIT_FILE=$TOIT_FILE" >> $GITHUB_OUTPUT
 
         if [[ $TOIT_VERSION = latest ]]; then