diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index f99de51..ef99b24 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -42,7 +42,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install pytest wheel jaxlib beartype
+          python -m pip install pytest wheel jaxlib beartype equinox
 
       - name: Checks with pre-commit
         uses: pre-commit/action@v2.0.3