diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 884013f3..308881a7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,7 +23,7 @@ on:
 jobs:
   build-linux:
     runs-on:
-      group: default
+      group: runners-arm64
     strategy:
       fail-fast: false
       matrix:
@@ -35,6 +35,7 @@ jobs:
         - gcc:14
         - clang:18
         - clang:19
+        - clang:20
     container: libfn/ci-build-${{ matrix.compiler }}
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index c3e7966f..075abb2a 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -19,7 +19,7 @@ on:
 jobs:
   coverage:
     runs-on:
-      group: intel-runners
+      group: runners-intel
     container: libfn/ci-build-gcc:14
     strategy:
       fail-fast: false
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 4d87f1ea..849fcbcd 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -21,7 +21,8 @@ permissions:
 
 jobs:
   generate_docs:
-    runs-on: ubuntu-latest
+    runs-on:
+      group: runners-arm64
     container: libfn/ci-docs:latest
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/licence.yml b/.github/workflows/licence.yml
index dce4c363..13d6cf20 100644
--- a/.github/workflows/licence.yml
+++ b/.github/workflows/licence.yml
@@ -34,7 +34,8 @@ on:
 jobs:
   licence-check:
     if: ${{ github.event_name == 'push' || inputs.run_licence_check }}
-    runs-on: ubuntu-latest
+    runs-on:
+      group: runners-arm64
     steps:
     - uses: actions/checkout@v4
 
@@ -44,7 +45,8 @@ jobs:
 
   licence-unchanged:
     if: ${{ github.event_name == 'pull_request' }}
-    runs-on: ubuntu-latest
+    runs-on:
+      group: runners-arm64
     env:
       LICENCE_FILE: LICENSE.md
     steps:
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 4536e383..776f53ad 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -28,7 +28,8 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on:
+      group: runners-intel
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index 406bb35b..f9bfc93d 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -10,7 +10,8 @@ on:
 
 jobs:
   checks:
-    runs-on: ubuntu-latest
+    runs-on:
+      group: runners-arm64
     container: libfn/ci-pre-commit:latest
 
     steps: