diff --git a/rust-src.diff b/rust-src.diff
index 0961e39..e69de29 100644
--- a/rust-src.diff
+++ b/rust-src.diff
@@ -1,12 +0,0 @@
-diff --git a/library/core/tests/lib.rs b/library/core/tests/lib.rs
-index 3947a64e5c6..ccb7be68eb1 100644
---- a/library/core/tests/lib.rs
-+++ b/library/core/tests/lib.rs
-@@ -67,6 +67,7 @@
- #![feature(slice_internals)]
- #![feature(slice_partition_dedup)]
- #![feature(ip)]
-+#![feature(ip_in_core)]
- #![feature(iter_advance_by)]
- #![feature(iter_array_chunks)]
- #![feature(iter_collect_into)]
diff --git a/rust-version b/rust-version
index f79dee3..e1c4119 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-nightly-2023-02-28
+nightly-2023-03-03