diff --git a/library/compiler-builtins/.github/workflows/main.yml b/library/compiler-builtins/.github/workflows/main.yml
index 8110e27f76e0..4e47825b2a27 100644
--- a/library/compiler-builtins/.github/workflows/main.yml
+++ b/library/compiler-builtins/.github/workflows/main.yml
@@ -80,7 +80,7 @@ jobs:
           os: windows-latest
           rust: nightly-x86_64-gnu
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: Install Rust (rustup)
@@ -108,7 +108,7 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: Install stable `rustfmt`
@@ -119,7 +119,7 @@ jobs:
     name: Clippy
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
       with:
         submodules: true
     # Unlike rustfmt, stable clippy does not work on code with nightly features.
diff --git a/library/compiler-builtins/Cargo.toml b/library/compiler-builtins/Cargo.toml
index 1b8b426ce05e..e3540f4658eb 100644
--- a/library/compiler-builtins/Cargo.toml
+++ b/library/compiler-builtins/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 authors = ["Jorge Aparicio <japaricious@gmail.com>"]
 name = "compiler_builtins"
-version = "0.1.105"
+version = "0.1.106"
 license = "MIT/Apache-2.0"
 readme = "README.md"
 repository = "https://github.com/rust-lang/compiler-builtins"
diff --git a/library/compiler-builtins/build.rs b/library/compiler-builtins/build.rs
index 9bf6a2547241..c2dd304e759d 100644
--- a/library/compiler-builtins/build.rs
+++ b/library/compiler-builtins/build.rs
@@ -57,9 +57,7 @@ fn main() {
         // Don't use a C compiler for these targets:
         //
         // * nvptx - everything is bitcode, not compatible with mixed C/Rust
-        // * riscv - the rust-lang/rust distribution container doesn't have a C
-        //   compiler.
-        if !target.contains("nvptx") && (!target.starts_with("riscv") || target.contains("xous")) {
+        if !target.contains("nvptx") {
             #[cfg(feature = "c")]
             c::compile(&llvm_target, &target);
         }
@@ -514,7 +512,7 @@ mod c {
             }
         }
 
-        if target_arch == "mips" {
+        if target_arch == "mips" || target_arch == "riscv32" || target_arch == "riscv64" {
             sources.extend(&[("__bswapsi2", "bswapsi2.c")]);
         }