diff --git a/packages/npm/openapi.sh b/packages/npm/openapi.sh
index cb0cb9a0..779037d0 100755
--- a/packages/npm/openapi.sh
+++ b/packages/npm/openapi.sh
@@ -2,6 +2,8 @@
 
 # Script to generate OpenAPI typescript definitions for the Matrix APIs
 
+set -e
+
 RELEASE="${npm_package_version%.*}"
 SPEC_DIR="v${RELEASE}"
 if [ "$RELEASE" == "0.0" ]; then