diff --git a/.github/workflows/release-tag.yml b/.github/workflows/release-tag.yml
index 5dc28554..720dca98 100644
--- a/.github/workflows/release-tag.yml
+++ b/.github/workflows/release-tag.yml
@@ -15,14 +15,15 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Make more space available on the runner
-        run: |
-          sudo rm -rf /usr/share/dotnet \
-                      /usr/local/lib/android \
-                      /opt/ghc \
-                      /opt/hostedtoolcache/CodeQL
-
-      - uses: ./.github/actions/prep-build-env
+      - name: Ensure KVM is usable by nix-build
+        run: sudo chmod a+rwx /dev/kvm
+        shell: bash
+      - uses: cachix/install-nix-action@v18
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+          extra_nix_config: |
+            system-features = nixos-test benchmark big-parallel kvm
+      - uses: DeterminateSystems/magic-nix-cache-action@v8
 
       - name: Make magic-nix-cache read-only by removing post-build-hook
         run: sed -i '/post-build-hook = magic-nix-cache-build-hook/d' $HOME/.config/nix/nix.conf