diff --git a/.ci/cirrus.vanilla.yml b/.ci/cirrus.vanilla.yml
index f09bef8..5b34ea3 100644
--- a/.ci/cirrus.vanilla.yml
+++ b/.ci/cirrus.vanilla.yml
@@ -3,7 +3,7 @@ task:
   env:
     matrix:
       - MACOS_VERSION: sequoia
-        MACOS_NUMBER: 15.2
+        MACOS_NUMBER: 15.3
       - MACOS_VERSION: sonoma
         MACOS_NUMBER: 14.6
       - MACOS_VERSION: ventura
diff --git a/templates/vanilla-sequoia.pkr.hcl b/templates/vanilla-sequoia.pkr.hcl
index 024aec7..feb23c2 100644
--- a/templates/vanilla-sequoia.pkr.hcl
+++ b/templates/vanilla-sequoia.pkr.hcl
@@ -8,7 +8,7 @@ packer {
 }
 
 source "tart-cli" "tart" {
-  from_ipsw    = "https://updates.cdn-apple.com/2024FallFCS/fullrestores/072-44245/E811A1B0-28A9-4FCD-AE32-322E796F0EB8/UniversalMac_15.2_24C101_Restore.ipsw"
+  from_ipsw    = "https://updates.cdn-apple.com/2025WinterFCS/fullrestores/072-08269/7CAAB9F7-E970-428D-8764-4CD7BCD105CD/UniversalMac_15.3_24D60_Restore.ipsw"
   vm_name      = "sequoia-vanilla"
   cpu_count    = 4
   memory_gb    = 8