diff --git a/.cirrus.yml b/.cirrus.yml
index 6203eeb02..2b418746f 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -1,6 +1,6 @@
 osx_m1_task:
   macos_instance:
-    image: ghcr.io/cirruslabs/macos-sequoia-xcode:latest
+    image: ghcr.io/cirruslabs/macos-tahoe-xcode:latest
   timeout_in: 5m
   matrix:
     env:
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 8f2ae4527..8291e9000 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -217,7 +217,7 @@ jobs:
     continue-on-error: true
     strategy:
       matrix:
-        image: [macos-15, macos-13] # Test on both ARM and X86
+        image: [macos-15, macos-15-intel] # Test on both ARM and X86 (through fall 2027)
         scheduler: [nemesis, sherwood, distrib]
         topology: [hwloc, binders, no]
         build_type: [Release, Debug]