diff --git a/Cargo.toml b/Cargo.toml
index 3a74bf589..00a457d69 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ env_logger = "0.3"
 ethcore-util = "0.1.0"
 rustc-serialize = "0.3"
 flate2 = "0.2"
-rocksdb = "0.2.1"
+rocksdb = "0.2"
 heapsize = "0.2.0"
 
 evmjit = { path = "rust-evmjit", optional = true }
diff --git a/rust-evmjit/Cargo.toml b/rust-evmjit/Cargo.toml
index d574af98f..aeebe60cf 100644
--- a/rust-evmjit/Cargo.toml
+++ b/rust-evmjit/Cargo.toml
@@ -3,5 +3,8 @@ name = "evmjit"
 version = "0.1.0"
 authors = ["debris <marek.kotewicz@gmail.com>"]
 
+[lib]
+crate-type = ["dylib"]
+
 [dependencies]
 tiny-keccak = "1.0"