diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index cc10d67c551db..ae9fc1c527fca 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -879,6 +879,9 @@ impl Step for PlainSourceTarball {
 
         // If we're building from git sources, we need to vendor a complete distribution.
         if builder.rust_info.is_git() {
+            // Ensure we have the submodules checked out.
+            builder.update_submodule(Path::new("src/tools/rust-analyzer"));
+
             // Vendor all Cargo dependencies
             let mut cmd = Command::new(&builder.initial_cargo);
             cmd.arg("vendor")