diff --git a/CHANGELOG.md b/CHANGELOG.md
index d969a82b..d481b8ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,9 @@ way to update this template, but currently, we follow a pattern:
 
 ## Upcoming version 2019-XX-XX
 
+- [add] Use sparse fields on InboxPage query to reduce data load.
+  [#1067](https://github.com/sharetribe/flex-template-web/pull/1067)
+  - NOTE: if you need more fields on `InboxPage`, you need to add those to `loadData` function.
 - [add] Use sparse fields on SearchPage to reduce data load.
   [#1066](https://github.com/sharetribe/flex-template-web/pull/1066)
   - NOTE: if you need more fields on `ListingCard` than title, price and geolocation - you need to
diff --git a/src/containers/InboxPage/InboxPage.duck.js b/src/containers/InboxPage/InboxPage.duck.js
index 3e94cedc..7f485066 100644
--- a/src/containers/InboxPage/InboxPage.duck.js
+++ b/src/containers/InboxPage/InboxPage.duck.js
@@ -94,6 +94,14 @@ export const loadData = (params, search) => (dispatch, getState, sdk) => {
     only: onlyFilter,
     lastTransitions: TRANSITIONS,
     include: ['provider', 'provider.profileImage', 'customer', 'customer.profileImage', 'booking'],
+    'fields.transaction': [
+      'lastTransition',
+      'lastTransitionedAt',
+      'transitions',
+      'payinTotal',
+      'payoutTotal',
+    ],
+    'fields.user': ['profile.displayName', 'profile.abbreviatedName'],
     'fields.image': ['variants.square-small', 'variants.square-small2x'],
     page,
     per_page: INBOX_PAGE_SIZE,
diff --git a/src/util/types.js b/src/util/types.js
index 8fc152ad..c008cccd 100644
--- a/src/util/types.js
+++ b/src/util/types.js
@@ -339,7 +339,7 @@ propTypes.transaction = shape({
   id: propTypes.uuid.isRequired,
   type: propTypes.value('transaction').isRequired,
   attributes: shape({
-    createdAt: instanceOf(Date).isRequired,
+    createdAt: instanceOf(Date),
     lastTransitionedAt: instanceOf(Date).isRequired,
     lastTransition: oneOf(TRANSITIONS).isRequired,
 
@@ -357,7 +357,7 @@ propTypes.transaction = shape({
         lineTotal: propTypes.money.isRequired,
         reversal: bool.isRequired,
       })
-    ).isRequired,
+    ),
     transitions: arrayOf(propTypes.transition).isRequired,
   }),
   booking: propTypes.booking,