diff --git a/src/bin/cook.rs b/src/bin/cook.rs
index 77b80c051b1303d4b4a019654e6207dbe11e07d4..75d75d0f0fa7dc4eeb6afe8b039730b22137e61b 100644
--- a/src/bin/cook.rs
+++ b/src/bin/cook.rs
@@ -439,6 +439,7 @@ COOKBOOK_CARGO="${COOKBOOK_REDOXER}"
 COOKBOOK_CARGO_FLAGS=(
     --path "${COOKBOOK_SOURCE}"
     --root "${COOKBOOK_STAGE}"
+    --locked
 )
 function cookbook_cargo {
     "${COOKBOOK_CARGO}" install "${COOKBOOK_CARGO_FLAGS[@]}"