diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..178bafa
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+ripe.atlas.cousteau==1.2
diff --git a/root-reachability.py b/root-reachability.py
old mode 100644
new mode 100755