diff --git a/nmigen/compat/genlib/__init__.py b/nmigen/compat/genlib/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/nmigen/compat/genlib/cdc.py b/nmigen/compat/genlib/cdc.py
new file mode 100644
index 0000000..e3c675c
--- /dev/null
+++ b/nmigen/compat/genlib/cdc.py
@@ -0,0 +1,4 @@
+from ...genlib.cdc import MultiReg
+
+
+__all__ = ["MultiReg"]