diff --git a/.github/workflows/manual-sol-artifacts.yaml b/.github/workflows/manual-sol-artifacts.yaml
index e06262e7..4f1b2dec 100644
--- a/.github/workflows/manual-sol-artifacts.yaml
+++ b/.github/workflows/manual-sol-artifacts.yaml
@@ -16,7 +16,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     env:
-      DEPLOYMENT_KEY: ${{ github.ref == 'refs/heads/main' && secrets.PRIVATE_KEY || secrets.PRIVATE_KEY_DEV }}
+      DEPLOYMENT_KEY: ${{ secrets.PRIVATE_KEY }}
     steps:
       - uses: actions/checkout@v4
         with:
diff --git a/.github/workflows/rainix.yaml b/.github/workflows/rainix.yaml
index fded9598..05d8d622 100644
--- a/.github/workflows/rainix.yaml
+++ b/.github/workflows/rainix.yaml
@@ -10,22 +10,33 @@ jobs:
       fail-fast: false
     runs-on: ${{ matrix.os }}
     env:
-      DEPLOYMENT_KEY: ${{ github.ref == 'refs/heads/main' && secrets.PRIVATE_KEY || secrets.PRIVATE_KEY_DEV }}
+      DEPLOYMENT_KEY: ${{ secrets.PRIVATE_KEY }}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
-
-      - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v4
-      - uses: DeterminateSystems/magic-nix-cache-action@v2
-
+      - uses: nixbuild/nix-quick-install-action@v30
+        with:
+          nix_conf: |
+            keep-env-derivations = true
+            keep-outputs = true
+      - uses: cachix/cachix-action@v15
+        continue-on-error: true
+        with:
+          name: rainlanguage
+          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
+          useDaemon: false
+      - name: Restore and save Nix store
+        uses: nix-community/cache-nix-action@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-prefixes-first-match: nix-${{ runner.os }}-
+          gc-max-store-size-linux: 1G
       - run: nix develop --command rainix-sol-prelude
-
       - name: Run ${{ matrix.task }}
         env:
           ETH_RPC_URL: ${{ secrets.CI_DEPLOY_RPC_URL }}
           ETHERSCAN_API_KEY: ${{ secrets.EXPLORER_VERIFICATION_KEY }}
           DEPLOY_VERIFIER: 'etherscan'
-        run: nix develop --command ${{ matrix.task }}
\ No newline at end of file
+        run: nix develop --command ${{ matrix.task }}