diff --git a/.gitea/workflows/nix-cache-bootstrap.yml b/.gitea/workflows/nix-cache-bootstrap.yml
index 6dc0fdf..bba7f0e 100644
--- a/.gitea/workflows/nix-cache-bootstrap.yml
+++ b/.gitea/workflows/nix-cache-bootstrap.yml
@@ -9,7 +9,7 @@ concurrency:
 jobs:
   bootstrap:
     name: Build every host and bootstrap the cache
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
diff --git a/.gitea/workflows/nix-cache-update.yml b/.gitea/workflows/nix-cache-update.yml
index 723cd30..328aef1 100644
--- a/.gitea/workflows/nix-cache-update.yml
+++ b/.gitea/workflows/nix-cache-update.yml
@@ -12,7 +12,7 @@ concurrency:
 jobs:
   update:
     name: Build every host and publish new cache objects
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4