diff --git a/build.gradle b/build.gradle
index e5f6aa598d16b94eb5c11cd97c41459071fc2945..08635e06d5a1fee6091b0b0bb0949775ee26b1da 100644
--- a/build.gradle
+++ b/build.gradle
@@ -91,6 +91,7 @@ dependencies {
     implementation 'com.otaliastudios:transcoder:0.9.1'
 
     implementation 'org.jxmpp:jxmpp-jid:1.0.3'
+    implementation 'org.jxmpp:jxmpp-stringprep-libidn:1.0.3'
     implementation 'org.osmdroid:osmdroid-android:6.1.11'
     implementation 'org.hsluv:hsluv:0.2'
     implementation 'org.conscrypt:conscrypt-android:2.5.2'
diff --git a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
index 4c2821c9110a61bcddd6a6e38eb3aa7e0f564a53..8096aefb2c636fa864860801e3cc0f0134f5f211 100644
--- a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
@@ -1244,6 +1244,7 @@ public class XmppConnectionService extends Service {
     @SuppressLint("TrulyRandom")
     @Override
     public void onCreate() {
+        org.jxmpp.stringprep.libidn.LibIdnXmppStringprep.setup();
         setTheme(ThemeHelper.find(this));
         ThemeHelper.applyCustomColors(this);
         if (Compatibility.runsTwentySix()) {