diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fc039385d..d7bd615b6 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -42,7 +42,7 @@ jobs:
           - "3.12"
         openeye: ["no"]
         include:
-          - os: "macos-latest"
+          - os: "macos-12"
             python-version: "3.12"
             pydantic-version: ">1"
           - os: "ubuntu-latest"
diff --git a/.github/workflows/installer.yaml b/.github/workflows/installer.yaml
index bbe0dbfed..4fac5c433 100644
--- a/.github/workflows/installer.yaml
+++ b/.github/workflows/installer.yaml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, ubuntu-latest]
+        os: [macos-14, macos-12, ubuntu-latest]
 
     steps:
     - name: Checkout Code