diff --git a/.cirrus.yml b/.cirrus.yml
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -14,36 +14,36 @@
 
 task:
   matrix:
-  - name: amd64-llvm15 World and kernel build and boot smoke test
+  - name: amd64-llvm16 World and kernel build and boot smoke test
     only_if: $CIRRUS_REPO_FULL_NAME != 'freebsd/freebsd-src'
     trigger_type: manual
     env:
       TARGET: amd64
       TARGET_ARCH: amd64
-      TOOLCHAIN: llvm15
+      TOOLCHAIN: llvm16
       TOOLCHAIN_PKG: ${TOOLCHAIN}-lite
-  - name: amd64-llvm16 World and kernel build and boot smoke test
+  - name: amd64-llvm17 World and kernel build and boot smoke test
     only_if: $CIRRUS_REPO_FULL_NAME != 'freebsd/freebsd-src' || $CIRRUS_BRANCH =~ 'pull/.*'
     env:
       TARGET: amd64
       TARGET_ARCH: amd64
-      TOOLCHAIN: llvm16
+      TOOLCHAIN: llvm17
       TOOLCHAIN_PKG: ${TOOLCHAIN}-lite
-  - name: arm64-llvm15 World and kernel build and boot smoke test
+  - name: arm64-llvm16 World and kernel build and boot smoke test
     only_if: $CIRRUS_REPO_FULL_NAME != 'freebsd/freebsd-src'
     trigger_type: manual
     env:
       TARGET: arm64
       TARGET_ARCH: aarch64
-      TOOLCHAIN: llvm15
+      TOOLCHAIN: llvm16
       TOOLCHAIN_PKG: ${TOOLCHAIN}
-  - name: arm64-llvm16 World and kernel build and boot smoke test
+  - name: arm64-llvm17 World and kernel build and boot smoke test
     only_if: $CIRRUS_REPO_FULL_NAME != 'freebsd/freebsd-src'
     trigger_type: manual
     env:
       TARGET: arm64
       TARGET_ARCH: aarch64
-      TOOLCHAIN: llvm16
+      TOOLCHAIN: llvm17
       TOOLCHAIN_PKG: ${TOOLCHAIN}
   - name: amd64-gcc12 World and kernel build and boot smoke test (manual)
     only_if: $CIRRUS_REPO_FULL_NAME != 'freebsd/freebsd-src'