diff --git a/.gitmodules b/.gitmodules
index 4596ae17d023..9ecf596f78f5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -25,7 +25,8 @@
 [submodule "src/llvm-project"]
 	path = src/llvm-project
 	url = https://github.com/rust-lang/llvm-project.git
-	branch = rustc/16.0-2023-04-05
+	branch = rustc/17.0-2023-12-14
+	shallow = true
 [submodule "src/doc/embedded-book"]
 	path = src/doc/embedded-book
 	url = https://github.com/rust-embedded/book.git