diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d7bd615b6..fc039385d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -42,7 +42,7 @@ jobs:
           - "3.12"
         openeye: ["no"]
         include:
-          - os: "macos-12"
+          - os: "macos-latest"
             python-version: "3.12"
             pydantic-version: ">1"
           - os: "ubuntu-latest"
diff --git a/.github/workflows/conda_cron.yaml b/.github/workflows/conda_cron.yaml
index 2698810a8..af4eaa535 100644
--- a/.github/workflows/conda_cron.yaml
+++ b/.github/workflows/conda_cron.yaml
@@ -20,15 +20,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ['ubuntu-latest', 'macos-latest', 'macos-13']
+        os: ['ubuntu-latest', 'macos-latest']
         python-version:
-          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
-        exclude:
-          - os: 'macos-latest'
-            python-version: '3.9'
 
     steps:
       - name: Setup Micromamba
diff --git a/.github/workflows/installer.yaml b/.github/workflows/installer.yaml
index 4fac5c433..bbe0dbfed 100644
--- a/.github/workflows/installer.yaml
+++ b/.github/workflows/installer.yaml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-14, macos-12, ubuntu-latest]
+        os: [macos-latest, ubuntu-latest]
 
     steps:
     - name: Checkout Code
diff --git a/news/no_more_macos12.rst b/news/no_more_macos12.rst
new file mode 100644
index 000000000..88e2dc8bf
--- /dev/null
+++ b/news/no_more_macos12.rst
@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* openfe is no longer tested against macos-12. macos support is, for now, limited to osx-arm64 (macos-14+).
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>