diff --git a/scripts/deploy-certs b/scripts/deploy-certs
index 4206e42..8d502ad 100755
--- a/scripts/deploy-certs
+++ b/scripts/deploy-certs
@@ -1,4 +1,6 @@
 #!/bin/sh
 
+set -eu
+
 cd "$(dirname "$0")/.."
 ansible-playbook site.yml -t certificates
diff --git a/scripts/deploy-dns b/scripts/deploy-dns
index 2c8524c..64fa2c6 100755
--- a/scripts/deploy-dns
+++ b/scripts/deploy-dns
@@ -1,4 +1,6 @@
 #!/bin/sh
 
+set -eu
+
 cd "$(dirname "$0")/.."
 ansible-playbook site.yml -t dns