diff --git a/README.rocksdb b/README.rocksdb
new file mode 100644
index 0000000..e06fa34
--- /dev/null
+++ b/README.rocksdb
@@ -0,0 +1 @@
+Rocksdb extension requires python 3.9, as it uses lbry-rocksdb which at the time of writing (13.10.2022) does not have a package available for python 3.10.