diff --git a/bin/build-schemas.ts b/bin/build-schemas.ts
index 8d1d3f8..8f6c8ef 100755
--- a/bin/build-schemas.ts
+++ b/bin/build-schemas.ts
@@ -95,4 +95,9 @@ async function* walk(
   }
 }
 
+process.on("unhandledRejection", (reason, promise) => {
+  console.log("Unhandled Reject at:", promise, "reason:", reason);
+  process.exit(1);
+});
+
 main();
diff --git a/test/normandy-arguments.ts b/test/normandy-arguments.ts
index 98eb12c..ea52c14 100755
--- a/test/normandy-arguments.ts
+++ b/test/normandy-arguments.ts
@@ -48,4 +48,9 @@ function convertActionNameToTypeName(actionName: string): string {
   return typeName + "Arguments";
 }
 
+process.on("unhandledRejection", (reason, promise) => {
+  console.log("Unhandled promise rejection:", reason);
+  process.exit(1);
+});
+
 main();