diff --git a/scripts/init.sh b/scripts/init.sh
index 1405a41..5faaee8 100755
--- a/scripts/init.sh
+++ b/scripts/init.sh
@@ -5,8 +5,8 @@ set -e
 echo "*** Initializing WASM build environment"
 
 if [ -z $CI_PROJECT_NAME ] ; then
-   rustup update nightly
+   rustup install nightly-2020-10-05
    rustup update stable
 fi
 
-rustup target add wasm32-unknown-unknown --toolchain nightly
+rustup target add wasm32-unknown-unknown --toolchain nightly-2020-10-05