diff --git a/Cargo.lock b/Cargo.lock
index 1b294b22026..77499794305 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3578,7 +3578,7 @@ dependencies = [
 
 [[package]]
 name = "rustfmt-nightly"
-version = "1.4.5"
+version = "1.4.6"
 dependencies = [
  "annotate-snippets",
  "atty",
diff --git a/src/tools/rustfmt b/src/tools/rustfmt
index 9792ff05297..f800ce47d1d 160000
--- a/src/tools/rustfmt
+++ b/src/tools/rustfmt
@@ -1 +1 @@
-Subproject commit 9792ff05297c0a5c40942b346c9b0341b9e7c0ee
+Subproject commit f800ce47d1da2a1c02ffd260deca8b7445f7facf