diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 2979d5bd1a..240ed0d173 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -151,6 +151,8 @@ jobs:
     - uses: Swatinem/rust-cache@v1
     - name: Add nightly rustfmt and clippy
       run: rustup toolchain install nightly --component rustfmt --component clippy --allow-downgrade
+    - name: Add no_std toolchain
+      run: rustup toolchain install nightly-x86_64-unknown-linux-gnu ; rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
     - uses: lyricwulf/abc@v1
       with: 
         # todo: remove afl++-clang when nyx support samcov_pcguard