diff --git a/src/main/java/org/asamk/Signal.java b/src/main/java/org/asamk/Signal.java
index ab926d3f..88b15926 100644
--- a/src/main/java/org/asamk/Signal.java
+++ b/src/main/java/org/asamk/Signal.java
@@ -23,6 +23,8 @@ public interface Signal extends DBusInterface {
 
     void setContactName(String number, String name);
 
+    List<byte[]> getGroupIds();
+
     String getGroupName(byte[] groupId);
 
     List<String> getGroupMembers(byte[] groupId);
diff --git a/src/main/java/org/asamk/signal/Manager.java b/src/main/java/org/asamk/signal/Manager.java
index 46c2e64c..51acaf1d 100644
--- a/src/main/java/org/asamk/signal/Manager.java
+++ b/src/main/java/org/asamk/signal/Manager.java
@@ -818,6 +818,16 @@ class Manager implements Signal {
         save();
     }
 
+    @Override
+    public List<byte[]> getGroupIds() {
+        List<GroupInfo> groups = getGroups();
+        List<byte[]> ids = new ArrayList<byte[]>(groups.size());
+        for (GroupInfo group : groups) {
+          ids.add(group.groupId);
+        }
+        return ids;
+    }
+
     @Override
     public String getGroupName(byte[] groupId) {
         GroupInfo group = getGroup(groupId);