diff --git a/esy/build.sh b/esy/build.sh
index 8522acd6f93..e022e76c06f 100644
--- a/esy/build.sh
+++ b/esy/build.sh
@@ -1,5 +1,7 @@
 #! /bin/bash
 
+set -euo pipefail
+
 OS=$1
 ESY_LIBJPEG_TURBO_PREFIX=$2
 
diff --git a/esy/install.sh b/esy/install.sh
index 76c86bb38f2..8e33e1dbddd 100644
--- a/esy/install.sh
+++ b/esy/install.sh
@@ -1,5 +1,7 @@
 #! /bin/bash
 
+set -euo pipefail
+
 OS=$1
 
 # Copy artifacts into output directories