diff --git a/.github/workflows/regression.yml b/.github/workflows/regression.yml
index e64290b6d..2cf292435 100644
--- a/.github/workflows/regression.yml
+++ b/.github/workflows/regression.yml
@@ -42,6 +42,7 @@ jobs:
           usesh: true
           prepare: |
             pkg install -y rust
+            pkg install -y llvm15
           run: |
             cargo test --locked