diff --git a/.gitmodules b/.gitmodules
index b48fddf963f..a13a2f5e01b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -33,7 +33,7 @@
 [submodule "src/llvm-project"]
 	path = src/llvm-project
 	url = https://github.com/rust-lang/llvm-project.git
-	branch = rustc/16.0-2023-06-05
+	branch = rustc/17.0-2023-07-29
 	shallow = true
 [submodule "src/doc/embedded-book"]
 	path = src/doc/embedded-book
diff --git a/src/llvm-project b/src/llvm-project
index a7d11c45378..7c612e1732f 160000
--- a/src/llvm-project
+++ b/src/llvm-project
@@ -1 +1 @@
-Subproject commit a7d11c453784a3f258c7269b5108c58592d27e1a
+Subproject commit 7c612e1732f3976fcfe29526ad796cbb6174b829