diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c7278a60..08782a1ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+### 1.7.11 (Aug 10, 2019)
+
+* Fix bug that produced corrupted CSV files in some countries
+
+### 1.7.10 (June 15, 2019)
+
+* Fix bug that prevented some devices from showing notifications.
+* Update targetSdk to Android Pie (API level 28)
+
 ### 1.7.8 (April 21, 2018)
 
 * Add support for adaptive icons (Oreo)
diff --git a/android/gradle.properties b/android/gradle.properties
index d559eb682..49afd37ce 100644
--- a/android/gradle.properties
+++ b/android/gradle.properties
@@ -1,5 +1,5 @@
-VERSION_CODE = 35
-VERSION_NAME = 1.7.8
+VERSION_CODE = 39
+VERSION_NAME = 1.8.0
 
 MIN_SDK_VERSION = 19
 TARGET_SDK_VERSION = 29
diff --git a/android/uhabits-android/src/main/AndroidManifest.xml b/android/uhabits-android/src/main/AndroidManifest.xml
index 87472fbb4..2f371d686 100644
--- a/android/uhabits-android/src/main/AndroidManifest.xml
+++ b/android/uhabits-android/src/main/AndroidManifest.xml
@@ -19,9 +19,7 @@
 -->
 <manifest
     package="org.isoron.uhabits"
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:versionCode="36"
-    android:versionName="1.7.9">
+    xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.VIBRATE"/>
 
diff --git a/android/uhabits-android/src/main/java/org/isoron/uhabits/notifications/AndroidNotificationTray.kt b/android/uhabits-android/src/main/java/org/isoron/uhabits/notifications/AndroidNotificationTray.kt
index 468fa678c..c588acddd 100644
--- a/android/uhabits-android/src/main/java/org/isoron/uhabits/notifications/AndroidNotificationTray.kt
+++ b/android/uhabits-android/src/main/java/org/isoron/uhabits/notifications/AndroidNotificationTray.kt
@@ -28,6 +28,7 @@ import android.os.Build.VERSION.*
 import android.support.annotation.*
 import android.support.v4.app.*
 import android.support.v4.app.NotificationCompat.*
+import android.util.*
 import org.isoron.androidbase.*
 import org.isoron.uhabits.R
 import org.isoron.uhabits.core.*
@@ -71,14 +72,23 @@ class AndroidNotificationTray
         notificationManager.notify(Int.MAX_VALUE, summary)
         val notification = buildNotification(habit, reminderTime, timestamp)
         createAndroidNotificationChannel(context)
-        notificationManager.notify(notificationId, notification)
+        try {
+            notificationManager.notify(notificationId, notification)
+        } catch (e: RuntimeException) {
+            // Some Xiaomi phones produce a RuntimeException if custom notification sounds are used.
+            Log.i("AndroidNotificationTray", "Failed to show notification. Retrying without sound.")
+            val n = buildNotification(habit, reminderTime, timestamp, disableSound = true)
+            notificationManager.notify(notificationId, n)
+
+        }
         active.add(notificationId)
     }
 
     @NonNull
     fun buildNotification(@NonNull habit: Habit,
                           @NonNull reminderTime: Long,
-                          @NonNull timestamp: Timestamp) : Notification
+                          @NonNull timestamp: Timestamp,
+                          disableSound: Boolean = false) : Notification
     {
 
         val addRepetitionAction = Action(
@@ -109,12 +119,15 @@ class AndroidNotificationTray
                 .setDeleteIntent(pendingIntents.dismissNotification(habit))
                 .addAction(addRepetitionAction)
                 .addAction(removeRepetitionAction)
-                .setSound(ringtoneManager.getURI())
+                .setSound(null)
                 .setWhen(reminderTime)
                 .setShowWhen(true)
                 .setOngoing(preferences.shouldMakeNotificationsSticky())
 		        .setGroup("default")
 
+        if (!disableSound)
+            builder.setSound(ringtoneManager.getURI())
+
         if (preferences.shouldMakeNotificationsLed())
             builder.setLights(Color.RED, 1000, 1000)
 
diff --git a/android/uhabits-core/src/main/java/org/isoron/uhabits/core/io/HabitsCSVExporter.java b/android/uhabits-core/src/main/java/org/isoron/uhabits/core/io/HabitsCSVExporter.java
index e8a8f3769..cebf85b21 100644
--- a/android/uhabits-core/src/main/java/org/isoron/uhabits/core/io/HabitsCSVExporter.java
+++ b/android/uhabits-core/src/main/java/org/isoron/uhabits/core/io/HabitsCSVExporter.java
@@ -119,7 +119,7 @@ public class HabitsCSVExporter
         {
             String sane = sanitizeFilename(h.getName());
             String habitDirName =
-                String.format("%03d %s", allHabits.indexOf(h) + 1, sane);
+                String.format(Locale.US, "%03d %s", allHabits.indexOf(h) + 1, sane);
             habitDirName = habitDirName.trim() + "/";
 
             new File(exportDirName + habitDirName).mkdirs();
@@ -202,7 +202,7 @@ public class HabitsCSVExporter
                 checksWriter.write(String.valueOf(checkmarks.get(j)[i]));
                 checksWriter.write(DELIMITER);
                 String score =
-                        String.format("%.4f", ((float) scores.get(j)[i]));
+                        String.format(Locale.US, "%.4f", ((float) scores.get(j)[i]));
                 scoresWriter.write(score);
                 scoresWriter.write(DELIMITER);
             }
diff --git a/android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/ScoreList.java b/android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/ScoreList.java
index b3ba68370..49c1c36fb 100644
--- a/android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/ScoreList.java
+++ b/android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/ScoreList.java
@@ -172,7 +172,7 @@ public abstract class ScoreList implements Iterable<Score>
         for (Score s : this)
         {
             String timestamp = dateFormat.format(s.getTimestamp().getUnixTime());
-            String score = String.format((Locale)null, "%.4f", s.getValue());
+            String score = String.format(Locale.US, "%.4f", s.getValue());
             out.write(String.format("%s,%s\n", timestamp, score));
         }
     }