diff --git a/.github/workflows/llvm-ci.yml b/.github/workflows/llvm-ci.yml
index e5cadc9..c2cf317 100644
--- a/.github/workflows/llvm-ci.yml
+++ b/.github/workflows/llvm-ci.yml
@@ -1,13 +1,13 @@
 name: Build LLVM (matrix)
 
 env:
-  DEFAULT_LLVM_VERSION: '15.0.7'
+  DEFAULT_LLVM_VERSION: '17.0.6'
 
 on:
   workflow_dispatch:
     inputs:
       llvm_version:
-        description: "e.g. 15.0.7, 21.1.1, etc"
+        description: "e.g. 15.0.7, 17.0.6, 18.1.8, 21.1.1, etc"
         required: false
   pull_request:
     branches:
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-22.04-arm, macos-15, windows-2025]
+        os: [ubuntu-22.04, macos-15, windows-2025]
     container: ${{ (matrix.os == 'ubuntu-22.04' && 'quay.io/pypa/manylinux_2_28_x86_64:latest') || (matrix.os == 'ubuntu-22.04-arm' && 'quay.io/pypa/manylinux_2_34_aarch64:latest') || '' }}  
     defaults:
       run: