diff --git a/.cirrus.yml b/.cirrus.yml
index 272032aa05fc..77510e1ea09e 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -16,13 +16,13 @@ task:
     env:
       TARGET: amd64
       TARGET_ARCH: amd64
-      TOOLCHAIN_PKG: llvm14
+      TOOLCHAIN_PKG: llvm15
   - name: World and kernel arm64 build and boot smoke test
     trigger_type: manual
     env:
       TARGET: arm64
       TARGET_ARCH: aarch64
-      TOOLCHAIN_PKG: llvm14
+      TOOLCHAIN_PKG: llvm15
   - name: World and kernel gcc12 amd64 build and boot smoke test
     trigger_type: manual
     env: