diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 58acc78..d9d5e27 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,13 @@
 name: CI
 
-on: [push]
+on:
+  pull_request:
+    types: [ opened, reopened, synchronize ]
+    branches:
+      - master
+  push:
+    branches:
+      - master
 
 jobs:
   test:
diff --git a/src/commonMain/kotlin/com/liftric/cognito/idp/IdentityProviderClient.kt b/src/commonMain/kotlin/com/liftric/cognito/idp/IdentityProviderClient.kt
index 067cdcb..a9fc72e 100644
--- a/src/commonMain/kotlin/com/liftric/cognito/idp/IdentityProviderClient.kt
+++ b/src/commonMain/kotlin/com/liftric/cognito/idp/IdentityProviderClient.kt
@@ -21,6 +21,7 @@ import kotlinx.serialization.json.Json
 open class IdentityProviderClient(region: String, clientId: String) : IdentityProvider {
     private val json = Json {
         allowStructuredMapKeys = true
+        ignoreUnknownKeys = true
     }
     private val configuration = Configuration(region, clientId)
     private val client = HttpClient {
diff --git a/src/jsMain/kotlin/ResponseJS.kt b/src/jsMain/kotlin/ResponseJS.kt
index 417c2ad..1bc48ec 100644
--- a/src/jsMain/kotlin/ResponseJS.kt
+++ b/src/jsMain/kotlin/ResponseJS.kt
@@ -99,7 +99,7 @@ data class AuthenticationResultJS(
     val TokenType: String,
     val NewDeviceMetadata: NewDeviceMetadataJS? = null
 )
-data class NewDeviceMetadatatJS(
+data class NewDeviceMetadataJS(
     val DeviceGroupKey: String? = null,
     val DeviceKey: String? = null,
 )