diff --git a/.github/workflows/regenerate.yml b/.github/workflows/regenerate.yml
index e30cc91c51..6fb57dd495 100644
--- a/.github/workflows/regenerate.yml
+++ b/.github/workflows/regenerate.yml
@@ -35,6 +35,8 @@ jobs:
 
       - name: Set up Homebrew
         uses: Homebrew/actions/setup-homebrew@f8d4222eb633e65c2a0157383cf80861fc7fae7f # 2026.09.07.1
+        with:
+          stable: false
 
       - name: Set up Ruby
         uses: Homebrew/actions/setup-ruby@f8d4222eb633e65c2a0157383cf80861fc7fae7f # 2026.09.07.1
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 97800ea134..46a39cde33 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -73,6 +73,8 @@ jobs:
 
       - name: Set up Homebrew
         uses: Homebrew/actions/setup-homebrew@f8d4222eb633e65c2a0157383cf80861fc7fae7f # 2026.09.07.1
+        with:
+          stable: false
 
       - name: Set up Ruby
         uses: Homebrew/actions/setup-ruby@f8d4222eb633e65c2a0157383cf80861fc7fae7f # 2026.09.07.1