diff --git a/src/bootstrap/src/core/build_steps/check.rs b/src/bootstrap/src/core/build_steps/check.rs
index fcd4f4078adb..65d25d3fb7e6 100644
--- a/src/bootstrap/src/core/build_steps/check.rs
+++ b/src/bootstrap/src/core/build_steps/check.rs
@@ -67,8 +67,6 @@ impl Step for Std {
             return;
         }
 
-        builder.require_submodule("library/stdarch", None);
-
         let stage = self.custom_stage.unwrap_or(builder.top_stage);
 
         let target = self.target;
diff --git a/src/bootstrap/src/core/build_steps/clippy.rs b/src/bootstrap/src/core/build_steps/clippy.rs
index ebf0caccfbc9..29a5e1f480bd 100644
--- a/src/bootstrap/src/core/build_steps/clippy.rs
+++ b/src/bootstrap/src/core/build_steps/clippy.rs
@@ -141,8 +141,6 @@ impl Step for Std {
     }
 
     fn run(self, builder: &Builder<'_>) {
-        builder.require_submodule("library/stdarch", None);
-
         let target = self.target;
         let compiler = builder.compiler(builder.top_stage, builder.config.host_target);
 
diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs
index f6efb23e8d86..d25cba4f9353 100644
--- a/src/bootstrap/src/core/build_steps/compile.rs
+++ b/src/bootstrap/src/core/build_steps/compile.rs
@@ -197,8 +197,6 @@ impl Step for Std {
             return;
         }
 
-        builder.require_submodule("library/stdarch", None);
-
         let mut target_deps = builder.ensure(StartupObjects { compiler, target });
 
         let compiler_to_use = builder.compiler_for(compiler.stage, compiler.host, target);
diff --git a/src/bootstrap/src/lib.rs b/src/bootstrap/src/lib.rs
index f44fe4548a1d..cfa42f61d01d 100644
--- a/src/bootstrap/src/lib.rs
+++ b/src/bootstrap/src/lib.rs
@@ -518,7 +518,7 @@ impl Build {
 
             // Make sure we update these before gathering metadata so we don't get an error about missing
             // Cargo.toml files.
-            let rust_submodules = ["library/backtrace", "library/stdarch"];
+            let rust_submodules = ["library/backtrace"];
             for s in rust_submodules {
                 build.require_submodule(
                     s,