diff --git a/scripts/setup-ubuntu.sh b/scripts/setup-ubuntu.sh
index bbecad85d..ab589bb4c 100755
--- a/scripts/setup-ubuntu.sh
+++ b/scripts/setup-ubuntu.sh
@@ -108,6 +108,11 @@ PACKAGES+=" composer"
 
 # Needed by package rust.
 PACKAGES+=" libssl-dev" # Needed to build Rust
+PACKAGES+=" llvm-12-dev"
+PACKAGES+=" llvm-12-tools"
+PACKAGES+=" clang-12"
+
+# Formerly needed by package rust. Not sure if needed by other packages.
 PACKAGES+=" clang-10"
 
 # Needed for package smalltalk.