diff --git a/.github/workflows/build-darwin.yml b/.github/workflows/build-darwin.yml
index bbeb946bde..6a7f4a4b23 100644
--- a/.github/workflows/build-darwin.yml
+++ b/.github/workflows/build-darwin.yml
@@ -9,7 +9,7 @@ on:
     inputs:
       runs-on:
         type: string
-        default: macos-12-large
+        default: macos-13-large
       tag:
         type: string
         required: true
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 102ae36cd8..92ce080245 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -84,7 +84,7 @@ jobs:
     uses: ./.github/workflows/build-darwin.yml
     secrets: inherit
     with:
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-12-large' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-13-large' || 'macos-13' }}
       tag: darwin-x64
       arch: x64
       cpu: haswell
@@ -95,7 +95,7 @@ jobs:
     uses: ./.github/workflows/build-darwin.yml
     secrets: inherit
     with:
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-12-large' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-13-large' || 'macos-13' }}
       tag: darwin-x64-baseline
       arch: x64
       cpu: nehalem
@@ -106,7 +106,7 @@ jobs:
     uses: ./.github/workflows/build-darwin.yml
     secrets: inherit
     with:
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'namespace-profile-bun-ci-darwin-aarch64' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'namespace-profile-bun-ci-darwin-aarch64' || 'macos-13' }}
       tag: darwin-aarch64
       arch: aarch64
       cpu: native
@@ -175,7 +175,7 @@ jobs:
     with:
       run-id: ${{ inputs.run-id }}
       pr-number: ${{ github.event.number }}
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-12-large' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-13-large' || 'macos-13' }}
       tag: darwin-x64
   darwin-x64-baseline-test:
     if: ${{ inputs.run-id || github.event_name == 'pull_request' }}
@@ -186,7 +186,7 @@ jobs:
     with:
       run-id: ${{ inputs.run-id }}
       pr-number: ${{ github.event.number }}
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-12-large' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-13-large' || 'macos-13' }}
       tag: darwin-x64-baseline
   darwin-aarch64-test:
     if: ${{ inputs.run-id || github.event_name == 'pull_request' }}
@@ -197,7 +197,7 @@ jobs:
     with:
       run-id: ${{ inputs.run-id }}
       pr-number: ${{ github.event.number }}
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'namespace-profile-bun-ci-darwin-aarch64' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'namespace-profile-bun-ci-darwin-aarch64' || 'macos-13' }}
       tag: darwin-aarch64
   windows-x64-test:
     if: ${{ inputs.run-id || github.event_name == 'pull_request' }}
diff --git a/.github/workflows/create-release-build.yml b/.github/workflows/create-release-build.yml
index e9aa5796fe..42adea0585 100644
--- a/.github/workflows/create-release-build.yml
+++ b/.github/workflows/create-release-build.yml
@@ -90,7 +90,7 @@ jobs:
     uses: ./.github/workflows/build-darwin.yml
     secrets: inherit
     with:
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-12-large' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-13-large' || 'macos-13' }}
       tag: darwin-x64
       arch: x64
       cpu: haswell
@@ -100,7 +100,7 @@ jobs:
     uses: ./.github/workflows/build-darwin.yml
     secrets: inherit
     with:
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-12-large' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'macos-13-large' || 'macos-13' }}
       tag: darwin-x64-baseline
       arch: x64
       cpu: nehalem
@@ -110,7 +110,7 @@ jobs:
     uses: ./.github/workflows/build-darwin.yml
     secrets: inherit
     with:
-      runs-on: ${{ github.repository_owner == 'oven-sh' && 'namespace-profile-bun-ci-darwin-aarch64' || 'macos-12' }}
+      runs-on: ${{ github.repository_owner == 'oven-sh' && 'namespace-profile-bun-ci-darwin-aarch64' || 'macos-13' }}
       tag: darwin-aarch64
       arch: aarch64
       cpu: native