diff --git a/.gitmodules b/.gitmodules
index 40e6fc2c19d..8618f61f04a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -37,7 +37,7 @@
 [submodule "src/llvm-project"]
 	path = src/llvm-project
 	url = https://github.com/rust-lang/llvm-project.git
-	branch = rustc/11.0-2021-01-05
+	branch = rustc/12.0-2021-02-03
 [submodule "src/doc/embedded-book"]
 	path = src/doc/embedded-book
 	url = https://github.com/rust-embedded/book.git
diff --git a/src/llvm-project b/src/llvm-project
index 96ae8953e49..40618a2340a 160000
--- a/src/llvm-project
+++ b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 96ae8953e4938d39c4173dd189f268459fff8c02
+Subproject commit 40618a2340ac2939b3dc320a9fe1133fa5caa345