diff --git a/scripts/build.sh b/scripts/build.sh
index 9b64905..5cee593 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -19,11 +19,11 @@ CARGO_SYS_ROOT="${DIR}/../sysroot/"
 pushd "${DIR}/../rust"
 
 for BIN in ${DIR}/../rust/usr/*/; do
-  cargo install --force --path "${BIN}" --root $CARGO_USR_ROOT
+  cargo install --offline --force --path "${BIN}" --root $CARGO_USR_ROOT
 done
 
 for BIN in ${DIR}/../rust/sys/*/; do
-  cargo install --all-features --force --path "${BIN}" --root $CARGO_SYS_ROOT
+  cargo install --offline --all-features --force --path "${BIN}" --root $CARGO_SYS_ROOT
 done
 popd