diff --git a/.gitmodules b/.gitmodules
index 9ad207a0d5226..14cda65014766 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -32,8 +32,8 @@
 	shallow = true
 [submodule "src/llvm-project"]
 	path = src/llvm-project
-	url = https://github.com/rust-lang/llvm-project.git
-	branch = rustc/18.1-2024-05-19
+	url = https://github.com/DianQK/llvm-project.git
+	branch = test-llvm-96631
 	shallow = true
 [submodule "src/doc/embedded-book"]
 	path = src/doc/embedded-book
diff --git a/src/llvm-project b/src/llvm-project
index e6a6470d1eb4c..5146a9d1245eb 160000
--- a/src/llvm-project
+++ b/src/llvm-project
@@ -1 +1 @@
-Subproject commit e6a6470d1eb4c88fee4b1ea98cd8e0ac4a181c16
+Subproject commit 5146a9d1245ebb3ac3da648d2ad92e3b445f4f15