diff --git a/.drone/auth1-setup.sh b/.drone/auth1-setup.sh
index 7891770..962ce0d 100755
--- a/.drone/auth1-setup.sh
+++ b/.drone/auth1-setup.sh
@@ -2,6 +2,9 @@
 
 set -ex
 
+# sanity check
+test $(hostname) = auth1
+
 # don't resolve container names to *real* CSC machines
 sed -E '/^(domain|search)[[:space:]]+csclub.uwaterloo.ca/d' /etc/resolv.conf > /tmp/resolv.conf
 cat /tmp/resolv.conf > /etc/resolv.conf
diff --git a/.drone/phosphoric-acid-setup.sh b/.drone/phosphoric-acid-setup.sh
index 0a0be57..c48b2eb 100755
--- a/.drone/phosphoric-acid-setup.sh
+++ b/.drone/phosphoric-acid-setup.sh
@@ -2,6 +2,9 @@
 
 set -ex
 
+# sanity check
+test $(hostname) = phosphoric-acid
+
 # don't resolve container names to *real* CSC machines
 sed -E '/^(domain|search)[[:space:]]+csclub.uwaterloo.ca/d' /etc/resolv.conf > /tmp/resolv.conf
 cat /tmp/resolv.conf > /etc/resolv.conf