diff --git a/package.json b/package.json
index 4f47295e..f9b32ca1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hawk.api",
-  "version": "1.1.28",
+  "version": "1.1.29",
   "main": "index.ts",
   "license": "UNLICENSED",
   "scripts": {
diff --git a/src/models/event.js b/src/models/event.js
index 1de2d9e3..0469e024 100644
--- a/src/models/event.js
+++ b/src/models/event.js
@@ -24,7 +24,6 @@
 /**
  * @typedef {Object} EventPayload
  * @property {string} title - event title
- * @property {DateTime} timestamp - event datetime
  * @property {Number} level - event severity level
  * @property {EventBacktraceFrame[]} [backtrace] - event stack array from the latest call to the earliest
  * @property {Object} [get] - GET params
@@ -44,6 +43,7 @@
  * @property {String} groupHash - event's hash (catcherType + title + salt)
  * @property {User[]} visitedBy - array of users who visited this event
  * @property {EventPayload} payload - event's payload
+ * @property {Number} timestamp - event's Unix timestamp
  */
 
 /**
diff --git a/src/models/eventsFactory.js b/src/models/eventsFactory.js
index 865dc9c7..1bac1551 100644
--- a/src/models/eventsFactory.js
+++ b/src/models/eventsFactory.js
@@ -19,6 +19,7 @@ const { ObjectID } = require('mongodb');
  * @property {String} _id — repetition's identifier
  * @property {String} groupHash - event's hash. Generates according to the rule described in EventSchema
  * @property {EventPayload} payload - repetition's payload
+ * @property {Number} timestamp - repetition's Unix timestamp
  */
 
 /**
@@ -436,6 +437,7 @@ class EventsFactory extends Factory {
         _id: eventOriginal._id,
         payload: eventOriginal.payload,
         groupHash: eventOriginal.groupHash,
+        timestamp: eventOriginal.timestamp,
       };
 
       repetitions.push(firstRepetition);
diff --git a/src/typeDefs/event.ts b/src/typeDefs/event.ts
index 1881c27e..a7990679 100644
--- a/src/typeDefs/event.ts
+++ b/src/typeDefs/event.ts
@@ -130,11 +130,6 @@ type EventPayload {
   """
   type: String
 
-  """
-  Event timestamp
-  """
-  timestamp: Float!
-
   """
   Event severity level
   """
@@ -185,11 +180,6 @@ type EventPayload {
 Type representing Event payload. All fields can be omitted if there are no difference with the original
 """
 type RepetitionPayload {
-  """
-  Event timestamp. Can be empty if repetition has the same timestamp as original event
-  """
-  timestamp: Float
-
   """
   Event title
   """
@@ -269,6 +259,11 @@ type Repetition {
   Delta of the event's payload, stringified JSON
   """
   delta: String
+
+  """
+  Event timestamp
+  """
+  timestamp: Float!
 }
 
 """
@@ -323,6 +318,11 @@ type Event {
   """
   payload: EventPayload!
 
+  """
+  Event timestamp
+  """
+  timestamp: Float!
+
   """
   Release data
   """