diff --git a/apps/webapp/src/worker/instance.ts b/apps/webapp/src/worker/instance.ts
index aa9acd1..5cc4698 100644
--- a/apps/webapp/src/worker/instance.ts
+++ b/apps/webapp/src/worker/instance.ts
@@ -2,7 +2,7 @@ import * as Comlink from "comlink";
 import { groupBy, indexBy, prop, unique } from "remeda";
 import { db } from "../lib/db";
 import { splitQueries } from "@repo/github";
-import type { Pull } from "@repo/model";
+import { LATEST_SCHEMA_VERSION, type Pull } from "@repo/model";
 import { GitHubClient, isInAttentionSet } from "@repo/github";
 import { gitHubClient } from "../github";
 
@@ -92,7 +92,10 @@ export async function syncPullsOnce(client: GitHubClient, force: boolean = false
             if (previousKeys.has(res.uid)) {
                 const previousPull = await db.pulls.get(res.uid);
                 // Avoid fetching information if the pull request did not change.
-                if (previousPull !== undefined && res.updatedAt <= previousPull.updatedAt) {
+                if (previousPull !== undefined 
+                    && res.updatedAt <= previousPull.updatedAt 
+                    && previousPull.schemaVersion === LATEST_SCHEMA_VERSION
+                ) {
                     stats.unchanged += 1;
                     return previousPull;
                 } else {
@@ -110,6 +113,7 @@ export async function syncPullsOnce(client: GitHubClient, force: boolean = false
                 connection: res.connection,
                 sections: res.sections,
                 host: connection.host,
+                schemaVersion: LATEST_SCHEMA_VERSION,
                 starred: stars.has(res.uid) ? 1 : 0,
                 attention: mayBeInAttentionSet ? isInAttentionSet(connection, pull) : undefined,
             }
diff --git a/packages/model/src/pull.ts b/packages/model/src/pull.ts
index 1f1dfc6..03c3b49 100644
--- a/packages/model/src/pull.ts
+++ b/packages/model/src/pull.ts
@@ -66,6 +66,11 @@ export type Attention = {
     reason?: string
 }
 
+// Schema version is used to force bursting the local cache of pull requests
+// when there is a change that requires it (e.g., adding a new field that must
+// be populated).
+export const LATEST_SCHEMA_VERSION = "v1";
+
 export type Pull = PullProps & {
     uid: string
     host: string
@@ -73,4 +78,5 @@ export type Pull = PullProps & {
     sections: string[]
     attention?: Attention
     connection: string
+    schemaVersion?: string
 }
\ No newline at end of file