diff --git a/polkadot/scripts/init.sh b/polkadot/scripts/init.sh
index e3618783c1..6ca085f277 100755
--- a/polkadot/scripts/init.sh
+++ b/polkadot/scripts/init.sh
@@ -6,6 +6,10 @@ echo "*** Initialising WASM build environment"
 
 rustup update nightly
 rustup target add wasm32-unknown-unknown --toolchain nightly
+# Temporarily install llvm-tools.
+# See https://github.com/rust-lang/rust/issues/53813
+# TODO: Remove this when fixed.
+rustup component add llvm-tools-preview --toolchain nightly
 rustup update stable
 
 # Install wasm-gc. It's useful for stripping slimming down wasm binaries.