diff --git a/clean.sh b/clean.sh
index c6bcf3e..e22b330 100755
--- a/clean.sh
+++ b/clean.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+source venv/bin/activate
 set -e
 isort --profile black *.py lib/*.py
 black -l 80 *.py lib/*.py