diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 493f5dc..65c0030 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,6 +12,10 @@ jobs:
       - uses: actions-rust-lang/setup-rust-toolchain@v1
       - name: Install latest nextest release
         uses: taiki-e/install-action@nextest
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: nightly
       - run: cargo nextest run --workspace
         env:
           RUST_LOG: info,tx-sitter=debug