diff --git a/.github/workflows/nixos.yml b/.github/workflows/nixos.yml
index c39268ed..9297a288 100644
--- a/.github/workflows/nixos.yml
+++ b/.github/workflows/nixos.yml
@@ -15,41 +15,19 @@ jobs:
   build-numenor:
     runs-on: ubuntu-latest
     steps:
-      - name: "Create Dir for Mounting moar Disk Space ❄"
-        run: |
-          sudo mkdir /nix
-
-      - name: "Maximize Disk Space"
-        run: |
-          sudo rm -rf $AGENT_TOOLSDIRECTORY
-          sudo rm -rf /usr/local/.ghcup
-          sudo rm -rf /usr/local/share/powershell
-          sudo rm -rf /usr/local/share/chromium
-          sudo rm -rf /usr/local/lib/node_modules
-          sudo rm -rf /usr/local/lib/heroku
-          sudo rm -rf /var/lib/docker/overlay2
-          sudo rm -rf /home/linuxbrew
-          sudo rm -rf /home/runner/.rustup
-
-      - name: "Maximize Disk Space 😈"
-        uses: easimon/maximize-build-space@v10
+      - name: Free Disk Space (Ubuntu)
+        uses: thiagokokada/free-disk-space@main
         with:
-          root-reserve-mb: 8192
-          swap-size-mb: 1024
-          build-mount-path: /nix
-          remove-dotnet: "true"
-          remove-android: "true"
-          remove-haskell: "true"
-          remove-codeql: "true"
-          remove-docker-images: "true"
+          tool-cache: true
+          usrmisc: true
+          usrlocal: true
+          opt: true
+          varcache: true
 
       - uses: actions/checkout@v5
 
       - name: "Install Nix ❄️"
-        uses: cachix/install-nix-action@v31
-        with:
-          extra_nix_config: |
-            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+        uses: DeterminateSystems/determinate-nix-action@v3.15.2
 
       - name: "Install Cachix ❄️"
         uses: cachix/cachix-action@v16
@@ -68,41 +46,19 @@ jobs:
     runs-on: ubuntu-latest
     needs: [build-numenor]
     steps:
-      - name: "Create Dir for Mounting moar Disk Space ❄"
-        run: |
-          sudo mkdir /nix
-
-      - name: "Maximize Disk Space"
-        run: |
-          sudo rm -rf $AGENT_TOOLSDIRECTORY
-          sudo rm -rf /usr/local/.ghcup
-          sudo rm -rf /usr/local/share/powershell
-          sudo rm -rf /usr/local/share/chromium
-          sudo rm -rf /usr/local/lib/node_modules
-          sudo rm -rf /usr/local/lib/heroku
-          sudo rm -rf /var/lib/docker/overlay2
-          sudo rm -rf /home/linuxbrew
-          sudo rm -rf /home/runner/.rustup
-
-      - name: "Maximize Disk Space 😈"
-        uses: easimon/maximize-build-space@v10
+      - name: Free Disk Space (Ubuntu)
+        uses: thiagokokada/free-disk-space@main
         with:
-          root-reserve-mb: 24432
-          swap-size-mb: 512
-          build-mount-path: /nix
-          remove-dotnet: "true"
-          remove-android: "true"
-          remove-haskell: "true"
-          remove-codeql: "true"
-          remove-docker-images: "true"
+          tool-cache: true
+          usrmisc: true
+          usrlocal: true
+          opt: true
+          varcache: true
 
       - uses: actions/checkout@v5
 
       - name: "Install Nix ❄️"
-        uses: cachix/install-nix-action@v31
-        with:
-          extra_nix_config: |
-            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+        uses: DeterminateSystems/determinate-nix-action@v3.15.2
 
       - name: "Install Cachix ❄️"
         uses: cachix/cachix-action@v16