1 files changed, 4 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 72884654..eaebd5c6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,7 @@ deps =
     pretend
     pytest
 commands =
+    pip install -e vectors
     coverage run --source=cryptography/,tests/ -m pytest --capture=no --strict {posargs}
     coverage report -m
 
@@ -34,7 +35,9 @@ commands =
 # Temporarily disable coverage on pypy because of performance problems with
 # coverage.py on pypy.
 [testenv:pypy]
-commands = py.test --capture=no --strict {posargs}
+commands =
+    pip install -e vectors
+    py.test --capture=no --strict {posargs}
 
 [testenv:pep8]
 deps =