diff --git a/setup.py b/setup.py
index 04f2ee0..09239aa 100644
--- a/setup.py
+++ b/setup.py
@@ -30,8 +30,8 @@
 install_requires = [
     'jinja2',
     'pandas',
-    'tensorflow>=2.3.0',
-    'tensorflow-probability>=0.11.0',
+    'tensorflow',
+    'tensorflow-probability',
     'numpy',
     'scipy',
     'matplotlib',
diff --git a/tox.ini b/tox.ini
index adfe9bc..2968b63 100644
--- a/tox.ini
+++ b/tox.ini
@@ -44,6 +44,8 @@ deps =
     codecov
     coverage
     coveralls
+passenv =
+    *
 commands =
     coverage erase
     python -m pytest tests --cov-report html --cov causalimpact -m "not slow"