diff --git a/.github/workflows/root-ci-config/buildconfig/global.txt b/.github/workflows/root-ci-config/buildconfig/global.txt
index 06b1826abc23e..f77a150054f61 100644
--- a/.github/workflows/root-ci-config/buildconfig/global.txt
+++ b/.github/workflows/root-ci-config/buildconfig/global.txt
@@ -35,7 +35,6 @@ cefweb=OFF
 check_connection=OFF
 clad=ON
 clingtest=OFF
-cocoa=OFF
 coverage=OFF
 cuda=OFF
 curl=ON
@@ -97,6 +96,5 @@ vecgeom=OFF
 webgui=ON
 win_broken_tests=OFF
 winrtdebug=OFF
-x11=ON
 xml=ON
 xrootd=ON
diff --git a/.github/workflows/root-ci-config/buildconfig/mac-beta.txt b/.github/workflows/root-ci-config/buildconfig/mac-beta.txt
index f7de3ebcdb542..40572f6b3d8d6 100644
--- a/.github/workflows/root-ci-config/buildconfig/mac-beta.txt
+++ b/.github/workflows/root-ci-config/buildconfig/mac-beta.txt
@@ -1,24 +1,8 @@
 CMAKE_CXX_STANDARD=23
 builtin_cfitsio=ON
 builtin_civetweb=ON
-builtin_fftw3=ON
-builtin_freetype=ON
-builtin_ftgl=ON
-builtin_gl2ps=ON
-builtin_gsl=ON
-builtin_gtest=ON
-builtin_lz4=ON
-builtin_nlohmannjson=ON
-builtin_openssl=ON
-builtin_pcre=ON
-builtin_tbb=ON
 builtin_unuran=ON
 builtin_vdt=ON
-builtin_xrootd=ON
-builtin_xxhash=ON
-builtin_zstd=ON
 check_connection=ON
-cocoa=ON
 davix=OFF
 minuit2_omp=OFF
-x11=OFF
diff --git a/.github/workflows/root-ci-config/buildconfig/mac26.txt b/.github/workflows/root-ci-config/buildconfig/mac26.txt
index d30211cae244e..96af0af2d5bc5 100644
--- a/.github/workflows/root-ci-config/buildconfig/mac26.txt
+++ b/.github/workflows/root-ci-config/buildconfig/mac26.txt
@@ -19,7 +19,5 @@ builtin_xrootd=ON
 builtin_xxhash=ON
 builtin_zstd=ON
 check_connection=ON
-cocoa=ON
 davix=OFF
 minuit2_omp=OFF
-x11=OFF
diff --git a/.github/workflows/root-ci-config/buildconfig/mac27.txt b/.github/workflows/root-ci-config/buildconfig/mac27.txt
index 1c3750173e89c..2e692118e1e0e 100644
--- a/.github/workflows/root-ci-config/buildconfig/mac27.txt
+++ b/.github/workflows/root-ci-config/buildconfig/mac27.txt
@@ -1,5 +1,3 @@
 CMAKE_CXX_STANDARD=23
-cocoa=ON
 davix=OFF
-x11=OFF
 
diff --git a/.github/workflows/root-ci.yml b/.github/workflows/root-ci.yml
index 0af636192a117..1c988aa2bce78 100644
--- a/.github/workflows/root-ci.yml
+++ b/.github/workflows/root-ci.yml
@@ -120,7 +120,7 @@ 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-testing, mac27, mac-beta]
         arch: [ARM64]
         include:
           - platform: mac15
@@ -164,7 +164,7 @@ jobs:
                     --head_ref        refs/pull/${{ github.event.pull_request.number }}/head:${{ github.event.pull_request.head.ref }}  \
                     --head_sha        ${{ github.event.pull_request.head.sha }}             \
                     --repository      ${{ github.server_url }}/${{ github.repository }}     \
-                    --platform        ${{ matrix.platform }}                                \
+                    --platform        ${{ matrix.platform == 'mac26-testing' && 'mac26' || matrix.platform }}                                \
                     --overrides       ${GLOBAL_OVERRIDES} ${OVERRIDES}
 
       - name: Workflow dispatch
@@ -246,13 +246,7 @@ 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 +366,7 @@ 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