diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 0c3e402..93fb0fe 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -3,12 +3,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@v16
+      - uses: cachix/install-nix-action@v31
         with:
-          extra-conf: |
+          extra_nix_config: |
             max-jobs = auto
-          source-url: https://install.lix.systems/lix/lix-installer-x86_64-linux
-      - uses: cachix/cachix-action@v15
+      - uses: cachix/cachix-action@v16
         with:
           authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
           extraPullNames: cuda-maintainers
diff --git a/dev/flake-module.nix b/dev/flake-module.nix
index a7d6753..77be283 100644
--- a/dev/flake-module.nix
+++ b/dev/flake-module.nix
@@ -45,16 +45,15 @@
           github-actions = {
             steps = [
               {
-                uses = "DeterminateSystems/nix-installer-action@v16";
+                uses = "cachix/install-nix-action@v31";
                 "with" = {
-                  source-url = "https://install.lix.systems/lix/lix-installer-x86_64-linux";
-                  extra-conf = ''
+                  extra_nix_config = ''
                     max-jobs = auto
                   '';
                 };
               }
               {
-                uses = "cachix/cachix-action@v15";
+                uses = "cachix/cachix-action@v16";
                 "with" = {
                   useDaemon = true;
                   name = "terlar";
diff --git a/module/jobs/github-actions/default.nix b/module/jobs/github-actions/default.nix
index 933370c..1edf134 100644
--- a/module/jobs/github-actions/default.nix
+++ b/module/jobs/github-actions/default.nix
@@ -22,6 +22,7 @@ in
     (lib.mkIf (changes != [ ]) {
       changes = {
         outputs.changes = "\${{ steps.diff.outputs.changes }}";
+        runs-on = config.pipeline.github-actions.defaultRunsOn;
         steps = [
           {
             id = "diff";
diff --git a/module/tests/github-actions/job.nix b/module/tests/github-actions/job.nix
index e51dd9d..82dca0e 100644
--- a/module/tests/github-actions/job.nix
+++ b/module/tests/github-actions/job.nix
@@ -116,6 +116,8 @@
 
   test-github-actions-job-with-default-branch-trigger-onMergeRequest-with-paths = {
     expr = test-lib.eval-github-actions {
+      pipeline.github-actions.defaultRunsOn = "ubuntu-latest";
+
       jobs.job = {
         branches.default = {
           changes.paths = [
@@ -131,6 +133,7 @@
       jobs = {
         changes = {
           outputs.changes = "\${{ steps.diff.outputs.changes }}";
+          runs-on = "ubuntu-latest";
           steps = [
             {
               id = "diff";
@@ -144,6 +147,7 @@
         job = {
           needs = [ "changes" ];
           "if" = ''''${{ fromJSON(needs.changes.outputs.changes)['job'] == true }}'';
+          runs-on = "ubuntu-latest";
           steps = [
             { uses = "actions/checkout@v4"; }
           ];