diff --git a/.github/workflows/cachix.yaml b/.github/workflows/cachix.yaml
index c14e1ea..87aad8c 100644
--- a/.github/workflows/cachix.yaml
+++ b/.github/workflows/cachix.yaml
@@ -15,10 +15,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - uses: cachix/install-nix-action@v25
+    - uses: cachix/install-nix-action@v27
 
     - name: Run alejandra
-      run: nix run nixpkgs#alejandra -- --check .
+      run: nix develop --command alejandra --check .
 
   flake-check:
     name: Flake check
diff --git a/flake.lock b/flake.lock
index 663a3bd..c5c8ec8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -193,11 +193,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1731403644,
-        "narHash": "sha256-T9V7CTucjRZ4Qc6pUEV/kpgNGzQbHWfGcfK6JJLfUeI=",
+        "lastModified": 1731797098,
+        "narHash": "sha256-UhWmEZhwJZmVZ1jfHZFzCg+ZLO9Tb/v3Y6LC0UNyeTo=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "f6581f1c3b137086e42a08a906bdada63045f991",
+        "rev": "672ac2ac86f7dff2f6f3406405bddecf960e0db6",
         "type": "github"
       },
       "original": {
@@ -257,11 +257,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1731386116,
-        "narHash": "sha256-lKA770aUmjPHdTaJWnP3yQ9OI1TigenUqVC3wweqZuI=",
+        "lastModified": 1731797254,
+        "narHash": "sha256-df3dJApLPhd11AlueuoN0Q4fHo/hagP75LlM5K1sz9g=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "689fed12a013f56d4c4d3f612489634267d86529",
+        "rev": "e8c38b73aeb218e27163376a2d617e61a2ad9b59",
         "type": "github"
       },
       "original": {