diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 9220cac..6df7fdf 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -32,6 +32,9 @@ jobs:
         with:
           python-version: 3.x
 
+      - name: Install llvm
+        run: sudo apt install -y llvm
+
       - name: Cache Rust and sccache
         uses: actions/cache@v4
         with: