diff --git a/build.sh b/build.sh
index 17320ed..f951538 100755
--- a/build.sh
+++ b/build.sh
@@ -4,9 +4,6 @@
 # exit if a command fails
 set -o errexit
 
-# exit if required variables aren't set
-set -o nounset
-
 # if no registry is provided, tag image as "local" registry
 registry="${REGISTRY:-local}"