diff --git a/.gitmodules b/.gitmodules
index 44f7dc75b7..3a079448b1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,7 +4,7 @@
 [submodule "lightbeam"]
 	path = lightbeam
 	url = https://github.com/CraneStation/lightbeam.git
-	branch = rustfmt
+	branch = master
 [submodule "wasmtime-api/c-examples/wasm-c-api"]
 	path = wasmtime-api/c-examples/wasm-c-api
 	url = https://github.com/WebAssembly/wasm-c-api
diff --git a/lightbeam b/lightbeam
index dcae4ec897..bbd7e91d1c 160000
--- a/lightbeam
+++ b/lightbeam
@@ -1 +1 @@
-Subproject commit dcae4ec89713e193006038cee87f21f40f7dd065
+Subproject commit bbd7e91d1c524b7d7f5b88c4e89cffe03c70b3ef