diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c1f911..9dc3167 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,9 @@
 
 ## [Unreleased]
 
-...
+### Changed
+
+* Added `pytest` dependency which is required for `api.get_outputs()`.
 
 ## 0.7.0
 
diff --git a/pretf/setup.py b/pretf/setup.py
index 1997805..eb79bc3 100644
--- a/pretf/setup.py
+++ b/pretf/setup.py
@@ -21,7 +21,7 @@ def get_version():
     license="MIT License",
     packages=["pretf"],
     entry_points={"console_scripts": ("pretf=pretf.cli:main")},
-    install_requires=["colorama", "pyhcl"],
+    install_requires=["colorama", "pyhcl", "pytest"],
     extras_require={"aws": ["pretf.aws=={}".format(version)]},
     zip_safe=False,
 )