diff --git a/ci/bootstrap_boost.sh b/ci/bootstrap_boost.sh
index f866f872..cff1c915 100755
--- a/ci/bootstrap_boost.sh
+++ b/ci/bootstrap_boost.sh
@@ -1,6 +1,5 @@
 #!/usr/bin/env bash
 
-set -o nounset
 set -o errexit
 set -o xtrace