diff --git a/ng-oxigraph/Cargo.toml b/ng-oxigraph/Cargo.toml
index e05a3fd..031375f 100644
--- a/ng-oxigraph/Cargo.toml
+++ b/ng-oxigraph/Cargo.toml
@@ -49,7 +49,7 @@ base64-url = "2.0.0"
 
 [target.'cfg(all(not(target_family = "wasm"),not(docsrs)))'.dependencies]
 libc = "0.2"
-ng-rocksdb = { version = "0.21.0-ngpreview.5", git = "https://git.nextgraph.org/NextGraph/rust-rocksdb.git", branch = "master", features = [  ] }
+ng-rocksdb = { version = "0.21.0-ngpreview.4", git = "https://git.nextgraph.org/NextGraph/rust-rocksdb.git", branch = "master", features = [  ] }
 
 [target.'cfg(all(target_family = "wasm", target_os = "unknown"))'.dependencies]
 getrandom = "0.2.8"
diff --git a/ng-storage-rocksdb/Cargo.toml b/ng-storage-rocksdb/Cargo.toml
index ee49b54..eb32b25 100644
--- a/ng-storage-rocksdb/Cargo.toml
+++ b/ng-storage-rocksdb/Cargo.toml
@@ -20,4 +20,4 @@ ng-repo = { path = "../ng-repo", version = "0.1.0-preview.1" }
 git = "https://git.nextgraph.org/NextGraph/rust-rocksdb.git"
 branch = "master"
 features = [  ]
-version = "0.21.0-ngpreview.5"
+version = "0.21.0-ngpreview.4"