diff --git a/.changeset/fresh-olives-vanish.md b/.changeset/fresh-olives-vanish.md
new file mode 100644
index 00000000..4ff9048b
--- /dev/null
+++ b/.changeset/fresh-olives-vanish.md
@@ -0,0 +1,7 @@
+---
+"@xmtp/react-sdk": minor
+---
+
+* Added `sentAt` field to cached reactions to track when a reaction was made
+* Updated `getReactionsByXmtpID` to return reactions sorted by `sentAt`
+* Updated `useReactions` hook to return reactions sorted by `sentAt`
diff --git a/packages/react-sdk/src/helpers/caching/contentTypes/reaction.test.ts b/packages/react-sdk/src/helpers/caching/contentTypes/reaction.test.ts
index 220f587f..fbe59ced 100644
--- a/packages/react-sdk/src/helpers/caching/contentTypes/reaction.test.ts
+++ b/packages/react-sdk/src/helpers/caching/contentTypes/reaction.test.ts
@@ -43,27 +43,39 @@ describe("ContentTypeReaction caching", () => {
 
   describe("saveReaction", () => {
     it("should save a reaction to the cache", async () => {
+      const firstSentAt = new Date();
       const testReaction = {
         content: "test",
         referenceXmtpID: "testXmtpId",
         schema: "custom",
         senderAddress: "testWalletAddress",
+        sentAt: firstSentAt,
         xmtpID: "testXmtpId",
       } satisfies CachedReaction;
 
       const reactionId = await saveReaction(testReaction, db);
       expect(reactionId).toEqual(1);
 
+      const testReactions = await getReactionsByXmtpID("testXmtpId", db);
+      expect(testReactions.length).toEqual(1);
+      expect(testReactions[0].sentAt).toEqual(firstSentAt);
+
+      const secondSentAt = new Date();
       const testReaction2 = {
         content: "test",
         referenceXmtpID: "testXmtpId",
         schema: "custom",
         senderAddress: "testWalletAddress",
+        sentAt: secondSentAt,
         xmtpID: "testXmtpId",
       } satisfies CachedReaction;
 
       const reactionId2 = await saveReaction(testReaction2, db);
       expect(reactionId2).toEqual(1);
+
+      const testReactions2 = await getReactionsByXmtpID("testXmtpId", db);
+      expect(testReactions2.length).toEqual(1);
+      expect(testReactions2[0].sentAt).toEqual(secondSentAt);
     });
   });
 
diff --git a/packages/react-sdk/src/helpers/caching/contentTypes/reaction.ts b/packages/react-sdk/src/helpers/caching/contentTypes/reaction.ts
index f71e6cb4..76a556f5 100644
--- a/packages/react-sdk/src/helpers/caching/contentTypes/reaction.ts
+++ b/packages/react-sdk/src/helpers/caching/contentTypes/reaction.ts
@@ -21,6 +21,7 @@ export type CachedReaction = {
   referenceXmtpID: Reaction["reference"];
   schema: Reaction["schema"];
   senderAddress: string;
+  sentAt: Date;
   xmtpID: string;
 };
 
@@ -75,6 +76,10 @@ export const saveReaction = async (reaction: CachedReaction, db: Dexie) => {
   // check if reaction already exists
   const existing = await findReaction(reaction, db);
   if (existing) {
+    // update when the reaction was sent
+    await reactionsTable.update(existing.id, {
+      sentAt: reaction.sentAt,
+    });
     return existing.id;
   }
 
@@ -108,7 +113,7 @@ export const getReactionsByXmtpID = async (
   db: Dexie,
 ) => {
   const reactionsTable = db.table("reactions") as CachedReactionsTable;
-  return reactionsTable.where({ referenceXmtpID: xmtpID }).toArray();
+  return reactionsTable.where({ referenceXmtpID: xmtpID }).sortBy("sentAt");
 };
 
 /**
@@ -178,6 +183,7 @@ export const processReaction: ContentTypeMessageProcessor = async ({
       referenceXmtpID: reaction.reference,
       schema: reaction.schema,
       senderAddress: message.senderAddress,
+      sentAt: message.sentAt,
       xmtpID: message.xmtpID,
     } satisfies CachedReaction;
 
@@ -210,6 +216,7 @@ export const reactionContentTypeConfig: ContentTypeConfiguration = {
       content,
       schema,
       senderAddress,
+      sentAt,
       xmtpID
     `,
   },
diff --git a/packages/react-sdk/src/hooks/useReactions.ts b/packages/react-sdk/src/hooks/useReactions.ts
index b0cc883f..06c31e93 100644
--- a/packages/react-sdk/src/hooks/useReactions.ts
+++ b/packages/react-sdk/src/hooks/useReactions.ts
@@ -17,7 +17,7 @@ export const useReactions = (message?: CachedMessage) => {
         return await reactionsTable
           .where("referenceXmtpID")
           .equals(message.xmtpID)
-          .toArray();
+          .sortBy("sentAt");
       } catch {
         return [];
       }