diff --git a/test-requirements.txt b/test-requirements.txt
index 3af44d7..4faf254 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,4 +5,5 @@ coverage>=3.6
 mock>=1.2
 flake8>=2.2.4,<=2.4.1
 os-testr>=0.4.1
-charm-tools
+charm-tools>=2.0.0
+requests==2.6.0
diff --git a/tox.ini b/tox.ini
index e8bf7cf..a4d9c0d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,7 +19,7 @@ basepython = python2.7
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = flake8 {posargs} hooks unit_tests tests
-           charm proof
+           charm-proof
 
 [testenv:venv]
 commands = {posargs}