diff --git a/.github/workflows/root-ci.yml b/.github/workflows/root-ci.yml
index 10ba68e8e88ff..710792a63a260 100644
--- a/.github/workflows/root-ci.yml
+++ b/.github/workflows/root-ci.yml
@@ -120,17 +120,12 @@ jobs:
       matrix:
         # Specify platform + optional build option overrides
         # Build options: https://root.cern/install/build_from_source/#all-build-options
-        platform: [mac26, mac27, mac-beta]
+        platform: [mac26]
         arch: [ARM64]
-        include:
-          - platform: mac15
-            arch: X86
-          - platform: mac-beta
-            is_special: true
 
     runs-on:
       - self-hosted
-      - ${{ matrix.platform }}
+      - mac26-testing 
 
     name: |
       ${{ matrix.platform }} ${{ matrix.arch }}
@@ -246,13 +241,7 @@ jobs:
   build-windows:
     # For any event that is not a PR, the CI will always run. In PRs, the CI
     # can be skipped if the tag [skip-ci] or [skip ci] is written in the title.
-    if: |
-        (github.repository_owner == 'root-project' && github.event_name != 'pull_request') ||
-        (github.event_name == 'pull_request' && !(
-          contains(github.event.pull_request.title, '[skip-ci]') ||
-          contains(github.event.pull_request.title, '[skip ci]') ||
-          contains(github.event.pull_request.labels.*.name, 'skip ci')
-        ))
+    if: false
 
     permissions:
       contents: read
@@ -372,13 +361,7 @@ jobs:
   build-linux:
     # For any event that is not a PR, the CI will always run. In PRs, the CI
     # can be skipped if the tag [skip-ci] or [skip ci] is written in the title.
-    if: |
-        (github.repository_owner == 'root-project' && github.event_name != 'pull_request') ||
-        (github.event_name == 'pull_request' && !(
-          contains(github.event.pull_request.title, '[skip-ci]') ||
-          contains(github.event.pull_request.title, '[skip ci]') ||
-          contains(github.event.pull_request.labels.*.name, 'skip ci')
-        ))
+    if: false
 
     permissions:
       contents: read