diff --git a/setup.py b/setup.py
index 6a270e3e1..47a5e4ef2 100644
--- a/setup.py
+++ b/setup.py
@@ -12,6 +12,8 @@
 
 test_requires = [
     'pytest',
+    'scipy',
+    'optuna',
     'attrs<19.2.0',  # pytest does not run with attrs==19.2.0 (https://github.com/pytest-dev/pytest/issues/3280)  # NOQA
 ]