diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index cddac23..8ee27b5 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -23,7 +23,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install pytest
+        pip install pytest pycryptodome
 
     - name: Run tests
       run: PYTHONPATH=. pytest
\ No newline at end of file