diff --git a/CHANGELOG.md b/CHANGELOG.md
index 168fc536a..617f4c1fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+### 11.5.2 (2021-02-25)
+
+* Fix CalDAV sync error
+* Report errors when generating recurrence dates
+
 ### 11.5.1 (2021-02-24)
 
 * Fix 'repeat until' date
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 5ddf44e34..99d3ba75c 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -45,8 +45,8 @@ android {
     defaultConfig {
         testApplicationId = "org.tasks.test"
         applicationId = "org.tasks"
-        versionCode = 110501
-        versionName = "11.5.1"
+        versionCode = 110502
+        versionName = "11.5.2"
         targetSdkVersion(Versions.targetSdk)
         minSdkVersion(Versions.minSdk)
         testInstrumentationRunner = "org.tasks.TestRunner"
diff --git a/app/src/main/java/com/todoroo/astrid/repeats/RepeatTaskHelper.kt b/app/src/main/java/com/todoroo/astrid/repeats/RepeatTaskHelper.kt
index 6fa89679f..946a2bb66 100644
--- a/app/src/main/java/com/todoroo/astrid/repeats/RepeatTaskHelper.kt
+++ b/app/src/main/java/com/todoroo/astrid/repeats/RepeatTaskHelper.kt
@@ -149,8 +149,9 @@ class RepeatTaskHelper @Inject constructor(
         }
 
         private fun invokeRecurrence(recur: Recur, original: DateTime, startDateAsDV: Date): Long {
-            val nextDate = recur.getNextDate(startDateAsDV, startDateAsDV)
-            return buildNewDueDate(original, nextDate)
+            return recur.getNextDate(startDateAsDV, startDateAsDV)
+                ?.let { buildNewDueDate(original, it) }
+                ?: throw IllegalStateException("recur=$recur original=$original startDateAsDv=$startDateAsDV")
         }
 
         /** Compute long due date from DateValue  */
diff --git a/app/src/main/java/org/tasks/caldav/property/ShareAccess.kt b/app/src/main/java/org/tasks/caldav/property/ShareAccess.kt
index 06b267976..c5911eb01 100644
--- a/app/src/main/java/org/tasks/caldav/property/ShareAccess.kt
+++ b/app/src/main/java/org/tasks/caldav/property/ShareAccess.kt
@@ -34,9 +34,7 @@ data class ShareAccess(val access: Property.Name): Property {
             var eventType = parser.eventType
             while (!(eventType == XmlPullParser.END_TAG && parser.depth == depth)) {
                 if (eventType == XmlPullParser.START_TAG && parser.depth == depth + 1) {
-                    when (val name = parser.propertyName()) {
-                        SHARED_OWNER, READ_WRITE, NOT_SHARED, READ -> result = name
-                    }
+                    result = parser.propertyName()
                 }
                 eventType = parser.next()
             }
diff --git a/app/src/main/java/org/tasks/caldav/property/Sharee.kt b/app/src/main/java/org/tasks/caldav/property/Sharee.kt
index 257da33e1..94d82e697 100644
--- a/app/src/main/java/org/tasks/caldav/property/Sharee.kt
+++ b/app/src/main/java/org/tasks/caldav/property/Sharee.kt
@@ -28,9 +28,10 @@ class Sharee(parser: XmlPullParser) {
                     DavResource.HREF ->
                         XmlUtils.readText(parser)?.let { href = it }
                     ShareAccess.NAME ->
-                        access = PropertyRegistry.create(ShareAccess.NAME, parser) as ShareAccess
+                        PropertyRegistry.create(ShareAccess.NAME, parser)
+                            ?.let { access = it as ShareAccess }
                     COMMENT ->
-                        comment = XmlUtils.readText(parser)
+                        XmlUtils.readText(parser)?.let { comment = it }
                     INVITE_ACCEPTED, INVITE_DECLINED, INVITE_NORESPONSE, INVITE_INVALID ->
                         response = name
                     DavResource.PROP ->
diff --git a/fastlane/metadata/android/en-US/changelogs/110502.txt b/fastlane/metadata/android/en-US/changelogs/110502.txt
new file mode 100644
index 000000000..3dae95d01
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/110502.txt
@@ -0,0 +1,4 @@
+* Fix 'repeat until' date
+* Fix repeat dates for UTC+13
+* F-Droid: Handle null name in Nominatim reverse geocoder
+* Update translations