2 files changed, 2 insertions, 1 deletions
diff --git a/compiler/rustc_interface/src/lib.rs b/compiler/rustc_interface/src/lib.rs
index 94ebe51f213..b81a7402701 100644
--- a/compiler/rustc_interface/src/lib.rs
+++ b/compiler/rustc_interface/src/lib.rs
@@ -1,5 +1,6 @@
 // tidy-alphabetical-start
 #![feature(decl_macro)]
+#![feature(file_buffered)]
 #![feature(let_chains)]
 #![feature(try_blocks)]
 #![warn(unreachable_pub)]
diff --git a/compiler/rustc_interface/src/passes.rs b/compiler/rustc_interface/src/passes.rs
index 617581cf667..bba517915a2 100644
--- a/compiler/rustc_interface/src/passes.rs
+++ b/compiler/rustc_interface/src/passes.rs
@@ -519,7 +519,7 @@ fn write_out_deps(tcx: TyCtxt<'_>, outputs: &OutputFilenames, out_filenames: &[P
                 write_deps_to_file(&mut file)?;
             }
             OutFileName::Real(ref path) => {
-                let mut file = BufWriter::new(fs::File::create(path)?);
+                let mut file = fs::File::create_buffered(path)?;
                 write_deps_to_file(&mut file)?;
             }
         }