diff --git a/linting/extra/Cargo.toml b/linting/extra/Cargo.toml
index 23b84cede5..889699d4e1 100644
--- a/linting/extra/Cargo.toml
+++ b/linting/extra/Cargo.toml
@@ -34,10 +34,10 @@ dylint_testing = "3.3.0"
 #
 # These cannot be moved to the workspace level because `cargo` does not provide
 # the `[[workspace.dev-dependencies]]` directive.
-ink = { version = "=5.1.0", path = "../../crates/ink", default-features = false, features = ["std"] }
+ink = { version = "=5.1.0", path = "../../crates/ink", default-features = false, features = ["std", "unstable"] }
 ink_metadata = { version = "=5.1.0", path = "../../crates/metadata", default-features = false }
 ink_primitives = { version = "=5.1.0", path = "../../crates/primitives", default-features = false }
-ink_storage = { version = "=5.1.0", path = "../../crates/storage", default-features = false }
+ink_storage = { version = "=5.1.0", path = "../../crates/storage", default-features = false, features = ["unstable"] }
 scale = { package = "parity-scale-codec", version = "3.6.12", default-features = false, features = ["derive"] }
 scale-info = { version = "2.6", default-features = false, features = ["derive"] }