diff --git a/package-lock.json b/package-lock.json
index cac3b46..747fef4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@ulms/api-clients",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index c0402f1..5199374 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ulms/api-clients",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "JavaScript API clients for ULMS platform",
   "files": [
     "lib"
diff --git a/src/event.js b/src/event.js
index 69a38f5..21a1cb3 100644
--- a/src/event.js
+++ b/src/event.js
@@ -118,7 +118,6 @@ class Event extends Service {
     const {
       direction,
       label,
-      last_created_at,
       last_occurred_at,
       limit,
       set,
@@ -127,7 +126,6 @@ class Event extends Service {
     const params = {
       direction,
       label,
-      last_created_at,
       last_occurred_at,
       limit,
       room_id,
@@ -147,12 +145,10 @@ class Event extends Service {
    */
   readState (room_id, sets, filterParams = {}) {
     const {
-      last_created_at,
       limit,
       occurred_at
     } = filterParams
     const params = {
-      last_created_at,
       limit,
       occurred_at,
       room_id,