diff --git a/.changeset/funny-lamps-work.md b/.changeset/funny-lamps-work.md
new file mode 100644
index 0000000000..33037da304
--- /dev/null
+++ b/.changeset/funny-lamps-work.md
@@ -0,0 +1,7 @@
+---
+'@clerk/backend': minor
+---
+
+- Added the `User.last_active_at` timestamp field which stores the latest date of session activity, with day precision. For further details, please consult the [Backend API documentation](https://clerk.com/docs/reference/backend-api/tag/Users#operation/GetUser).
+- Added the `last_active_at_since` filtering parameter for the Users listing request. The new parameter can be used to retrieve users that have displayed session activity since the given date. For further details, please consult the [Backend API documentation](https://clerk.com/docs/reference/backend-api/tag/Users#operation/GetUserList).
+- Added the `last_active_at` available options for the `orderBy` parameter of the Users listing request. For further details, please consult the [Backend API documentation](https://clerk.com/docs/reference/backend-api/tag/Users#operation/GetUserList).
diff --git a/packages/backend/src/api/endpoints/UserApi.ts b/packages/backend/src/api/endpoints/UserApi.ts
index d8295f1435..e069af0c6e 100644
--- a/packages/backend/src/api/endpoints/UserApi.ts
+++ b/packages/backend/src/api/endpoints/UserApi.ts
@@ -15,11 +15,22 @@ type UserCountParams = {
   query?: string;
   userId?: string[];
   externalId?: string[];
+  last_active_at_since?: number;
 };
 
 type UserListParams = ClerkPaginationRequest<
   UserCountParams & {
-    orderBy?: 'created_at' | 'updated_at' | '+created_at' | '+updated_at' | '-created_at' | '-updated_at';
+    orderBy?:
+      | 'created_at'
+      | 'updated_at'
+      | '+created_at'
+      | '+updated_at'
+      | '-created_at'
+      | '-updated_at'
+      | '+last_sign_in_at'
+      | '+last_active_at'
+      | '-last_sign_in_at'
+      | '-last_active_at';
   }
 >;
 
diff --git a/packages/backend/src/api/resources/JSON.ts b/packages/backend/src/api/resources/JSON.ts
index 3e7a0647ab..80dde62e26 100644
--- a/packages/backend/src/api/resources/JSON.ts
+++ b/packages/backend/src/api/resources/JSON.ts
@@ -271,6 +271,7 @@ export interface UserJSON extends ClerkResourceJSON {
   unsafe_metadata: UserUnsafeMetadata;
   created_at: number;
   updated_at: number;
+  last_active_at: number | null;
 }
 
 export interface VerificationJSON extends ClerkResourceJSON {
diff --git a/packages/backend/src/api/resources/User.ts b/packages/backend/src/api/resources/User.ts
index c3017fdcb6..a83beee602 100644
--- a/packages/backend/src/api/resources/User.ts
+++ b/packages/backend/src/api/resources/User.ts
@@ -33,6 +33,7 @@ export class User {
     readonly phoneNumbers: PhoneNumber[] = [],
     readonly web3Wallets: Web3Wallet[] = [],
     readonly externalAccounts: ExternalAccount[] = [],
+    readonly lastActiveAt: number | null,
   ) {}
 
   static fromJSON(data: UserJSON): User {
@@ -64,6 +65,7 @@ export class User {
       (data.phone_numbers || []).map(x => PhoneNumber.fromJSON(x)),
       (data.web3_wallets || []).map(x => Web3Wallet.fromJSON(x)),
       (data.external_accounts || []).map((x: ExternalAccountJSON) => ExternalAccount.fromJSON(x)),
+      data.last_active_at,
     );
   }
 }