diff --git a/src/main/java/org/asamk/Signal.java b/src/main/java/org/asamk/Signal.java
index d0fea3da..97ec2ee3 100644
--- a/src/main/java/org/asamk/Signal.java
+++ b/src/main/java/org/asamk/Signal.java
@@ -69,6 +69,8 @@ public interface Signal extends DBusInterface {
 
     List<byte[]> getGroupIds();
 
+    List<String> getBase64GroupIds();
+
     String getGroupName(byte[] groupId);
 
     List<String> getGroupMembers(byte[] groupId);
diff --git a/src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java b/src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java
index a0f40ada..c6a9b892 100644
--- a/src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java
+++ b/src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java
@@ -372,6 +372,16 @@ public class DbusSignalImpl implements Signal {
         return ids;
     }
 
+    @Override
+    public List<String> getBase64GroupIds() {
+        var groups = m.getGroups();
+        var ids = new ArrayList<String>(groups.size());
+        for (var group : groups) {
+            ids.add(group.getGroupId().toBase64());
+        }
+        return ids;
+    }
+
     @Override
     public String getGroupName(final byte[] groupId) {
         var group = m.getGroup(GroupId.unknownVersion(groupId));