diff --git a/audiolm_pytorch/soundstream.py b/audiolm_pytorch/soundstream.py
index 55c6cd5..7de2907 100644
--- a/audiolm_pytorch/soundstream.py
+++ b/audiolm_pytorch/soundstream.py
@@ -19,7 +19,7 @@
 
 from vector_quantize_pytorch import (
     GroupedResidualVQ,
-    ResidualLFQ
+    GroupedResidualLFQ
 )
 
 from local_attention import LocalMHA
@@ -518,12 +518,11 @@ def __init__(
         self.rq_groups = rq_groups
 
         if use_lookup_free_quantizer:
-            assert rq_groups == 1, 'grouped residual LFQ not implemented yet'
-
-            self.rq = ResidualLFQ(
+            self.rq = GroupedResidualLFQ(
                 dim = codebook_dim,
                 num_quantizers = rq_num_quantizers,
                 codebook_size = codebook_size,
+                groups = rq_groups,
                 quantize_dropout = True,
                 quantize_dropout_cutoff_index = quantize_dropout_cutoff_index,
                 **rq_kwargs
diff --git a/audiolm_pytorch/version.py b/audiolm_pytorch/version.py
index bcd8d54..bb64aa4 100644
--- a/audiolm_pytorch/version.py
+++ b/audiolm_pytorch/version.py
@@ -1 +1 @@
-__version__ = '1.6.0'
+__version__ = '1.6.1'
diff --git a/setup.py b/setup.py
index d8b9bd9..18f8cf9 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,7 @@
     'torchaudio',
     'transformers',
     'tqdm',
-    'vector-quantize-pytorch>=1.10.2'
+    'vector-quantize-pytorch>=1.10.4'
   ],
   classifiers=[
     'Development Status :: 4 - Beta',