diff --git a/.github/workflows/build_mac.yml b/.github/workflows/build_mac.yml
index 9448e9f08b..3fecc74835 100644
--- a/.github/workflows/build_mac.yml
+++ b/.github/workflows/build_mac.yml
@@ -5,7 +5,7 @@ on:
     paths:
     - .github/workflows/build_mac.yml
     - ansible/playbooks/AdoptOpenJDK_Unix_Playbook/**
-    branches:         
+    branches:
     - master
 
 permissions:
@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         include:
-          - os: [macos-11]
+          - os: [macos-13]
           - os: [macos-14]
     steps:
 
@@ -27,6 +27,13 @@ jobs:
     - name: Install dependencies
       run: brew install ansible
 
+    # This is to fix an issue with the github macos14 runner, that cant resolve keyserver.ubuntu.com
+    # but this does work when replaced with the IP address. Spotted during the GPG verification of ANT step
+    # Upstream Bug : https://github.com/actions/runner-images/issues/9777
+    - name: Replace keyserver address with IP address
+      run: |
+        sed -i '' 's/keyserver\.ubuntu\.com/185.125.188.27/g' ansible/playbooks/Supporting_Scripts/package_signature_verification.sh
+
     - name: Run Ansible Playbook
       run: |
         echo "localhost ansible_user=runner ansible_connection=local" > ansible/hosts
diff --git a/ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/tasks/MacOSX.yml b/ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/tasks/MacOSX.yml
index 4b4dbb0773..ef2aa43b5e 100644
--- a/ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/tasks/MacOSX.yml
+++ b/ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/tasks/MacOSX.yml
@@ -125,6 +125,26 @@
   with_items: "{{ Build_Tool_Packages }}"
   tags: build_tools
 
+# Install CMAKE Where It Doesn't exist
+- name: Check if cmake is installed in /opt/homebrew/bin
+  stat:
+    path: /opt/homebrew/bin/cmake
+  register: cmake_homebrew
+
+- name: Check if cmake is installed in /usr/local/bin
+  stat:
+    path: /usr/local/bin/cmake
+  register: cmake_local
+
+- name: Install Cmake
+  become: yes
+  become_user: "{{ ansible_user }}"
+  homebrew:
+    name: "cmake"
+    state: present
+  tags: build_tools
+  when: not (cmake_homebrew.stat.exists or cmake_local.stat.exists)
+
 - name: Install Build Tool Packages NOT macOS 10.12
   become: yes
   become_user: "{{ ansible_user }}"
diff --git a/ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/vars/MacOSX.yml b/ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/vars/MacOSX.yml
index 1b5f24865c..be418e5063 100644
--- a/ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/vars/MacOSX.yml
+++ b/ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/vars/MacOSX.yml
@@ -8,7 +8,6 @@
 Build_Tool_Packages:
   - autoconf
   - automake # for compiling freetype on JDK8u
-  - cmake # OpenJ9
   - coreutils
   - gnupg
   - gnu-sed
diff --git a/ansible/playbooks/Supporting_Scripts/package_signature_verification.sh b/ansible/playbooks/Supporting_Scripts/package_signature_verification.sh
index 141faf32f6..6bd1c0d5d3 100755
--- a/ansible/playbooks/Supporting_Scripts/package_signature_verification.sh
+++ b/ansible/playbooks/Supporting_Scripts/package_signature_verification.sh
@@ -37,7 +37,7 @@ while [[ $# -gt 0 ]]; do
       ;;
     -k)
       KEY="$2"
-      shift 2 
+      shift 2
       ;;
     -*|--*)
       echo "Unknown option $1"