diff --git a/karuboniru-packages.yaml b/karuboniru-packages.yaml
index 46597e7..c93c48f 100644
--- a/karuboniru-packages.yaml
+++ b/karuboniru-packages.yaml
@@ -55,7 +55,7 @@ packages:
   - gcc-gfortran
   - llvm
   - mold
-  - clang
+  - "'clang(major) = 20'"
   - clang-analyzer 
   - lld
   - lldb