diff --git a/.github/workflows/cachix.yaml b/.github/workflows/cachix.yaml
index 91cb4ff..87851e7 100644
--- a/.github/workflows/cachix.yaml
+++ b/.github/workflows/cachix.yaml
@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: cachix/install-nix-action@v18
+    - uses: cachix/install-nix-action@v20
 
     - name: Run alejandra
       run: nix run nixpkgs#alejandra -- --check .
@@ -26,7 +26,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: cachix/install-nix-action@v18
+    - uses: cachix/install-nix-action@v20
 
     - uses: cachix/cachix-action@v12
       with:
@@ -55,7 +55,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: cachix/install-nix-action@v18
+    - uses: cachix/install-nix-action@v20
 
     - uses: cachix/cachix-action@v12
       with:
@@ -83,7 +83,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: cachix/install-nix-action@v18
+    - uses: cachix/install-nix-action@v20
 
     - uses: cachix/cachix-action@v12
       with:
diff --git a/hosts/poseidon/default.nix b/hosts/poseidon/default.nix
index eea84dd..b6746fb 100644
--- a/hosts/poseidon/default.nix
+++ b/hosts/poseidon/default.nix
@@ -58,6 +58,8 @@ in {
   my.networking.externalInterface = "eno1";
 
   # List services that you want to enable:
+  services.vaultwarden.package = pkgs.unstable.vaultwarden;
+  services.vaultwarden.webVaultPackage = pkgs.unstable.vaultwarden.webvault;
   my.services = {
     vaultwarden = {
       enable = true;