diff --git a/pyproject.toml b/pyproject.toml
index 096d697..4c8391e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "vector-quantize-pytorch"
-version = "1.20.5"
+version = "1.20.6"
 description = "Vector Quantization - Pytorch"
 authors = [
     { name = "Phil Wang", email = "lucidrains@gmail.com" }
diff --git a/vector_quantize_pytorch/utils.py b/vector_quantize_pytorch/utils.py
index d591a09..84d4a62 100644
--- a/vector_quantize_pytorch/utils.py
+++ b/vector_quantize_pytorch/utils.py
@@ -22,6 +22,7 @@
     FSQ,
     LFQ,
     SimVQ,
+    ResidualSimVQ,
     ResidualLFQ,
     GroupedResidualLFQ,
     ResidualFSQ,