diff --git a/android/app/src/main/kotlin/de/tum/in/tumcampus/widgets/calendar/CalendarWidgetService.kt b/android/app/src/main/kotlin/de/tum/in/tumcampus/widgets/calendar/CalendarWidgetService.kt
index c48ad1fc..57470d96 100644
--- a/android/app/src/main/kotlin/de/tum/in/tumcampus/widgets/calendar/CalendarWidgetService.kt
+++ b/android/app/src/main/kotlin/de/tum/in/tumcampus/widgets/calendar/CalendarWidgetService.kt
@@ -32,7 +32,8 @@ class CalendarWidgetService : RemoteViewsService() {
             val widgetData = HomeWidgetPlugin.getData(applicationContext)
             val data = widgetData.getString("calendar", null)
             if (data != null) {
-                calendarEvents = Json.decodeFromString<Array<WidgetCalendarItem>>(data).asList()
+                val json = Json { ignoreUnknownKeys = true }
+                calendarEvents = json.decodeFromString<Array<WidgetCalendarItem>>(data).asList()
             }
 
             calendarEvents.filter { widgetCalendarItem ->
@@ -114,7 +115,11 @@ class CalendarWidgetService : RemoteViewsService() {
             remoteViews.setTextViewText(R.id.calendar_widget_event_time, eventTime)
 
             // Setup event location
-            remoteViews.setTextViewText(R.id.calendar_widget_event_location, currentItem.location)
+            if (currentItem.location?.isNotEmpty() == true) {
+                val locationText = currentItem.location.firstOrNull()
+                    ?: applicationContext.getString(R.string.unknown)
+                remoteViews.setTextViewText(R.id.calendar_widget_event_location, locationText)
+            }
 
             // Setup action to open calendar
             val fillInIntent = Intent().apply {
diff --git a/android/app/src/main/kotlin/de/tum/in/tumcampus/widgets/calendar/WidgetCalendarItem.kt b/android/app/src/main/kotlin/de/tum/in/tumcampus/widgets/calendar/WidgetCalendarItem.kt
index 853768fe..9002ddb8 100644
--- a/android/app/src/main/kotlin/de/tum/in/tumcampus/widgets/calendar/WidgetCalendarItem.kt
+++ b/android/app/src/main/kotlin/de/tum/in/tumcampus/widgets/calendar/WidgetCalendarItem.kt
@@ -23,7 +23,7 @@ data class WidgetCalendarItem(
     @Serializable(with = DateTimeSerializer::class)
     @SerialName("dtend")
     val endDate: LocalDateTime,
-    val location: String? = null,
+    val location: List<String>? = null,
     val color: Long? = null,
     val isVisible: Boolean? = null,
     var isFirstOnDay: Boolean = false
diff --git a/android/app/src/main/res/values-de/strings.xml b/android/app/src/main/res/values-de/strings.xml
index 57d74f70..1b6b0f99 100644
--- a/android/app/src/main/res/values-de/strings.xml
+++ b/android/app/src/main/res/values-de/strings.xml
@@ -11,6 +11,7 @@
     <string name="MINUTES">Minuten</string>
     <string name="just_now">Gerade eben</string>
     <string name="yesterday">Gestern</string>
+    <string name="unknown">Unbekannt</string>
     <plurals name="yearsAgo">
         <item quantity="one">Vor %d Jahr</item>
         <item quantity="other">Vor %d Jahren</item>
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
index ce4c3a9c..d6ff8930 100644
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@@ -12,6 +12,7 @@
     <string name="just_now">moments ago</string>
     <string name="yesterday">Yesterday</string>
     <string name="event_start_end_format_string" translatable="false">%1$s–%2$s</string>
+    <string name="unknown">Unknown</string>
     <plurals name="yearsAgo">
         <item quantity="one">%d year ago</item>
         <item quantity="other">%d years ago</item>
diff --git a/android/settings.gradle b/android/settings.gradle
index e1006e6c..69a41be9 100644
--- a/android/settings.gradle
+++ b/android/settings.gradle
@@ -18,7 +18,7 @@ pluginManagement {
 
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version '8.7.2' apply false
+    id "com.android.application" version '8.7.3' apply false
     id "org.jetbrains.kotlin.android" version "1.9.20" apply false
     id "org.jetbrains.kotlin.plugin.serialization" version "2.0.21" apply false
     id "com.google.gms.google-services" version "4.4.2" apply false
diff --git a/ios/CalendarWidget/CalendarEntry.swift b/ios/CalendarWidget/CalendarEntry.swift
index f266c91f..bb3d6973 100644
--- a/ios/CalendarWidget/CalendarEntry.swift
+++ b/ios/CalendarWidget/CalendarEntry.swift
@@ -14,7 +14,7 @@ struct CalendarEntry: Codable, Identifiable {
     let status: String
     let startDate: Date
     let endDate: Date
-    let location: String?
+    let location: [String]
     let color: Int?
     
     enum CodingKeys: String, CodingKey {
diff --git a/ios/CalendarWidget/CalendarEventView.swift b/ios/CalendarWidget/CalendarEventView.swift
index 7b86ded6..90b081ac 100644
--- a/ios/CalendarWidget/CalendarEventView.swift
+++ b/ios/CalendarWidget/CalendarEventView.swift
@@ -51,15 +51,16 @@ struct CalendarEventView: View {
                 
                 let timeText = "\(timeFormatter.string(from: event.startDate)) - \(timeFormatter.string(from: event.endDate))"
                 
-                if (event.location != nil) {
-                    Text("\(timeText) | \(event.location!)")
-                        .font(.caption2)
-                        .lineLimit(1)
-                } else {
-                    Text(timeText)
-                        .font(.caption2)
-                        .lineLimit(1)
+                Group {
+                    if (event.location.isEmpty == false) {
+                        let locationText = event.location.first ?? String(localized: "Unknown")
+                        Text("\(timeText) | \(locationText)")
+                    } else {
+                        Text(timeText)
+                    }
                 }
+                .font(.caption2)
+                .lineLimit(1)
             }
             .padding(6)
             .widgetAccentable(false)
diff --git a/ios/CalendarWidget/CalendarWidget.swift b/ios/CalendarWidget/CalendarWidget.swift
index cb4349c9..da6c86e2 100644
--- a/ios/CalendarWidget/CalendarWidget.swift
+++ b/ios/CalendarWidget/CalendarWidget.swift
@@ -13,8 +13,8 @@ struct Provider: TimelineProvider {
         CalendarWidgetEntry(
             date: Date(),
             entries: [
-                CalendarEntry(id: "0", title: "Lineare Algebra für Informatik", status: "Test", startDate: Date.now, endDate: Date.now, location: "Galileo Audimax", color: nil),
-                CalendarEntry(id: "0", title: "Einführung in die Buchführung", status: "Test", startDate: Date.now, endDate: Date.now, location: "Audimax", color: nil)
+                CalendarEntry(id: "0", title: "Lineare Algebra für Informatik", status: "Test", startDate: Date.now, endDate: Date.now, location: ["Galileo Audimax"], color: nil),
+                CalendarEntry(id: "0", title: "Einführung in die Buchführung", status: "Test", startDate: Date.now, endDate: Date.now, location: ["Audimax"], color: nil)
             ],
             size: context.family
         )
diff --git a/ios/Runner/Localizable.xcstrings b/ios/Runner/Localizable.xcstrings
index 67bd4912..ca22f8e5 100644
--- a/ios/Runner/Localizable.xcstrings
+++ b/ios/Runner/Localizable.xcstrings
@@ -100,6 +100,16 @@
           }
         }
       }
+    },
+    "Unknown" : {
+      "localizations" : {
+        "de" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Unbekannt"
+          }
+        }
+      }
     }
   },
   "version" : "1.0"
diff --git a/lib/base/util/read_list_value.dart b/lib/base/util/read_list_value.dart
index b132961d..602532f9 100644
--- a/lib/base/util/read_list_value.dart
+++ b/lib/base/util/read_list_value.dart
@@ -2,7 +2,7 @@ List<dynamic> readListValue(Map<dynamic, dynamic> data, String key) {
   final relevantData = data[key];
   if (relevantData is List<dynamic>) {
     return relevantData;
-  } else if (relevantData is Map<String, dynamic>) {
+  } else if (relevantData is Map<String, dynamic> || relevantData is String) {
     return [relevantData];
   } else {
     return [];
diff --git a/lib/calendarComponent/model/calendar_event.dart b/lib/calendarComponent/model/calendar_event.dart
index d77b55c6..67e23cb8 100644
--- a/lib/calendarComponent/model/calendar_event.dart
+++ b/lib/calendarComponent/model/calendar_event.dart
@@ -20,7 +20,7 @@ class CalendarEvent extends Searchable {
   final DateTime startDate;
   @JsonKey(name: "dtend")
   final DateTime endDate;
-  @JsonKey(readValue: readListValue)
+  @JsonKey(name: "location", readValue: readListValue)
   final List<String> locations;
 
   int? color;
diff --git a/lib/calendarComponent/model/calendar_event.g.dart b/lib/calendarComponent/model/calendar_event.g.dart
index b0eef3f4..0b4e3156 100644
--- a/lib/calendarComponent/model/calendar_event.g.dart
+++ b/lib/calendarComponent/model/calendar_event.g.dart
@@ -15,7 +15,7 @@ CalendarEvent _$CalendarEventFromJson(Map<String, dynamic> json) =>
       description: json['description'] as String?,
       startDate: DateTime.parse(json['dtstart'] as String),
       endDate: DateTime.parse(json['dtend'] as String),
-      locations: (readListValue(json, 'locations') as List<dynamic>)
+      locations: (readListValue(json, 'location') as List<dynamic>)
           .map((e) => e as String)
           .toList(),
       color: (json['color'] as num?)?.toInt(),
@@ -30,7 +30,7 @@ Map<String, dynamic> _$CalendarEventToJson(CalendarEvent instance) =>
       'description': instance.description,
       'dtstart': instance.startDate.toIso8601String(),
       'dtend': instance.endDate.toIso8601String(),
-      'locations': instance.locations,
+      'location': instance.locations,
       'color': instance.color,
       'isVisible': instance.isVisible,
     };
diff --git a/pubspec.lock b/pubspec.lock
index 53e0578f..d14e31cc 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -817,10 +817,10 @@ packages:
     dependency: transitive
     description:
       name: io
-      sha256: "2ec25704aba361659e10e3e5f5d672068d332fc8ac516421d483a11e5cbd061e"
+      sha256: dfd5a80599cf0165756e3181807ed3e77daf6dd4137caaad72d0b7931597650b
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   js:
     dependency: transitive
     description:
@@ -1185,10 +1185,10 @@ packages:
     dependency: transitive
     description:
       name: quick_actions_ios
-      sha256: "402596dea62a1028960b93f7651ec22be0e2a91e4fbf92a1c62d3b95f8ff95a5"
+      sha256: "837b7e6b5973784d3da56b8c959b446b215914f20405d88cd7d22a2fb94e4e4c"
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.1"
+    version: "1.2.0"
   quick_actions_platform_interface:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 7df3f42a..d66f8faf 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: campus_flutter
 description: "TUM Campus App"
 publish_to: 'none'
-version: 5.1.2+1
+version: 5.1.3+1
 
 environment:
   sdk: '>=3.2.3 <4.0.0'