diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a0fbc4a63..c3a9d1008 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -63,7 +63,7 @@ jobs:
             builder: ubuntu-20.04
           - target:
               os: macos
-            builder: macos-11
+            builder: macos-12
           - target:
               os: windows
             builder: windows-latest
diff --git a/.github/workflows/fluffy.yml b/.github/workflows/fluffy.yml
index 14eb4bb08..ea0e552c2 100644
--- a/.github/workflows/fluffy.yml
+++ b/.github/workflows/fluffy.yml
@@ -120,7 +120,7 @@ jobs:
             builder: ubuntu-22.04
           - target:
               os: macos
-            builder: macos-11
+            builder: macos-12
           - target:
               os: windows
             builder: windows-latest
diff --git a/.github/workflows/nimbus_verified_proxy.yml b/.github/workflows/nimbus_verified_proxy.yml
index c3f5bf7f6..b6d73cbcc 100644
--- a/.github/workflows/nimbus_verified_proxy.yml
+++ b/.github/workflows/nimbus_verified_proxy.yml
@@ -53,7 +53,7 @@ jobs:
             builder: ubuntu-20.04
           - target:
               os: macos
-            builder: macos-11
+            builder: macos-12
           - target:
               os: windows
             builder: windows-latest
diff --git a/.github/workflows/simulators.yml b/.github/workflows/simulators.yml
index 8c9011f9f..f561dfb08 100644
--- a/.github/workflows/simulators.yml
+++ b/.github/workflows/simulators.yml
@@ -61,7 +61,7 @@ jobs:
 
   build-macos-amd64:
     name: Macos-amd64
-    runs-on: macos-11
+    runs-on: macos-12
     steps:
       - name: Checkout code
         uses: actions/checkout@v4