diff --git a/scripts/build b/scripts/build
index 95c535a..ea92c22 100755
--- a/scripts/build
+++ b/scripts/build
@@ -53,6 +53,8 @@ fi
 
 # The following is to prevent user's overrides to disturb srtool
 rustup override set $RUSTC_VERSION
+rustup target add wasm32-unknown-unknown
+rustup component add rust-src
 
 export RUSTCV=`rustc -V`