diff --git a/src/scripts/createIndex.js b/src/scripts/createIndex.js
index 865b0bc..45cca2e 100644
--- a/src/scripts/createIndex.js
+++ b/src/scripts/createIndex.js
@@ -20,6 +20,7 @@ async function createIndex () {
             description: { type: 'text' },
             title: { type: 'text' },
             startDate: { type: 'date' },
+            duration: { type: 'integer' },
             numPositions: { type: 'integer' },
             resourceType: { type: 'keyword' },
             rateType: { type: 'keyword' },