diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Common.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Common.kt
index 0f432f60a8..629d374372 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Common.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Common.kt
@@ -430,3 +430,5 @@ const val bankStatementField = "bank_statement"
 const val rentalAgreementField = "rental_agreement"
 const val passportRegistrationField = "passport_registration"
 const val temporaryRegistrationField = "temporary_registration"
+
+const val buttonTextField = "button_text"
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/ChatEvents/WebAppData.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/ChatEvents/WebAppData.kt
new file mode 100644
index 0000000000..6f1d00b4a4
--- /dev/null
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/ChatEvents/WebAppData.kt
@@ -0,0 +1,15 @@
+package dev.inmo.tgbotapi.types.message.ChatEvents
+
+import dev.inmo.tgbotapi.types.buttonTextField
+import dev.inmo.tgbotapi.types.dataField
+import dev.inmo.tgbotapi.types.message.ChatEvents.abstracts.PrivateEvent
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+class WebAppData(
+    @SerialName(dataField)
+    val data: String,
+    @SerialName(buttonTextField)
+    val buttonText: String
+) : PrivateEvent
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/RawMessage.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/RawMessage.kt
index 4022e0ddae..ec45e22643 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/RawMessage.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/RawMessage.kt
@@ -95,6 +95,9 @@ internal data class RawMessage(
     // login property
     private val connected_website: String? = null,
 
+    // login property
+    private val web_app_data: WebAppData? = null,
+
     // passport property
     private val passport_data: PassportData? = null,
     private val proximity_alert_triggered: ProximityAlertTriggered? = null,
@@ -203,6 +206,7 @@ internal data class RawMessage(
             proximity_alert_triggered != null -> proximity_alert_triggered
             successful_payment != null -> SuccessfulPaymentEvent(successful_payment)
             connected_website != null -> UserLoggedIn(connected_website)
+            web_app_data != null -> web_app_data
             else -> null
         }
     }