diff --git a/.github/workflows/build-artifacts.yml b/.github/workflows/build-artifacts.yml
index f2a33a0..03b05fd 100644
--- a/.github/workflows/build-artifacts.yml
+++ b/.github/workflows/build-artifacts.yml
@@ -10,7 +10,7 @@ on:
     paths-ignore: [ "*.md" ]
 
 jobs:
-  Build-VSIX:
+  Compile-All:
     runs-on: macos-12
     steps:
       - uses: actions/checkout@v4
@@ -23,6 +23,8 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-vagrant-
 
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+
       - name: Show Vagrant version
         run: vagrant --version
 
diff --git a/flake.lock b/flake.lock
index a5964e1..c1db0ae 100644
--- a/flake.lock
+++ b/flake.lock
@@ -11,7 +11,7 @@
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-unstable",
+        "ref": "nixos-stable",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 9c5fcff..3a772b2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "Builds TextMate grammar for latest version of PARI/GP";
 
-  inputs.nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  inputs.nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-stable";
 
   outputs = { self, nixpkgs }:
     let