diff --git a/test_crates/trait_associated_type_default_removed/new/src/lib.rs b/test_crates/trait_associated_type_default_removed/new/src/lib.rs
index 0dba3997..097cbb8a 100644
--- a/test_crates/trait_associated_type_default_removed/new/src/lib.rs
+++ b/test_crates/trait_associated_type_default_removed/new/src/lib.rs
@@ -1,3 +1,5 @@
+#![feature(associated_type_defaults)]
+
 mod sealed {
     pub(crate) trait Sealed {}
 }
diff --git a/test_crates/trait_associated_type_default_removed/old/src/lib.rs b/test_crates/trait_associated_type_default_removed/old/src/lib.rs
index 22df46e1..4f83cbc5 100644
--- a/test_crates/trait_associated_type_default_removed/old/src/lib.rs
+++ b/test_crates/trait_associated_type_default_removed/old/src/lib.rs
@@ -1,3 +1,5 @@
+#![feature(associated_type_defaults)]
+
 mod sealed {
     pub(crate) trait Sealed {}
 }