diff --git a/Cargo.lock b/Cargo.lock
index 51e462ae..3e8f67ac 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -471,11 +471,11 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.1.15"
+version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc587bc0ec293155d5bfa6b9891ec18a1e330c234f896ea47fbada4cadbe47e6"
+checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "libc",
  "wasi 0.9.0+wasi-snapshot-preview1",
 ]
@@ -1180,7 +1180,7 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
- "getrandom 0.1.15",
+ "getrandom 0.1.16",
  "libc",
  "rand_chacha 0.2.2",
  "rand_core 0.5.1",
@@ -1225,7 +1225,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 dependencies = [
- "getrandom 0.1.15",
+ "getrandom 0.1.16",
 ]
 
 [[package]]
@@ -1472,7 +1472,7 @@ dependencies = [
 
 [[package]]
 name = "shadowsocks"
-version = "1.9.0"
+version = "1.9.0-alpha.2"
 dependencies = [
  "async-trait",
  "base64",
@@ -1514,7 +1514,7 @@ dependencies = [
 
 [[package]]
 name = "shadowsocks-rust"
-version = "1.9.0"
+version = "1.9.0-alpha.2"
 dependencies = [
  "byte_string",
  "byteorder",
@@ -1535,7 +1535,7 @@ dependencies = [
 
 [[package]]
 name = "shadowsocks-service"
-version = "1.9.0"
+version = "1.9.0-alpha.2"
 dependencies = [
  "async-trait",
  "byte_string",
diff --git a/Cargo.toml b/Cargo.toml
index 9a9017df..9215a92c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "shadowsocks-rust"
-version = "1.9.0"
+version = "1.9.0-alpha.2"
 authors = ["Shadowsocks Contributors"]
 description = "shadowsocks is a fast tunnel proxy that helps you bypass firewalls."
 repository = "https://github.com/shadowsocks/shadowsocks-rust"
@@ -116,7 +116,7 @@ mimalloc = { version = "0.1", optional = true }
 tcmalloc = { version = "0.3", optional = true }
 jemallocator = { version = "0.3", optional = true }
 
-shadowsocks-service = { version = "1.9", path = "./crates/shadowsocks-service" }
+shadowsocks-service = { version = "1.9.0-alpha.2", path = "./crates/shadowsocks-service" }
 
 [target.'cfg(unix)'.dependencies]
 daemonize = "0.4"
diff --git a/crates/shadowsocks-service/Cargo.toml b/crates/shadowsocks-service/Cargo.toml
index 8dfb6945..60a62e9b 100644
--- a/crates/shadowsocks-service/Cargo.toml
+++ b/crates/shadowsocks-service/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "shadowsocks-service"
-version = "1.9.0"
+version = "1.9.0-alpha.2"
 authors = ["Shadowsocks Contributors"]
 description = "shadowsocks is a fast tunnel proxy that helps you bypass firewalls."
 repository = "https://github.com/shadowsocks/shadowsocks-rust"
@@ -101,7 +101,7 @@ regex = "1.4"
 serde = { version = "1.0", features = ["derive"] }
 json5 = "0.3"
 
-shadowsocks = { version = "1.9", path = "../shadowsocks" }
+shadowsocks = { version = "1.9.0-alpha.2", path = "../shadowsocks" }
 
 strum = { version = "0.20", optional = true }
 strum_macros = { version = "0.20", optional = true }
diff --git a/crates/shadowsocks/Cargo.toml b/crates/shadowsocks/Cargo.toml
index d7196f27..aa9b1e09 100644
--- a/crates/shadowsocks/Cargo.toml
+++ b/crates/shadowsocks/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "shadowsocks"
-version = "1.9.0"
+version = "1.9.0-alpha.2"
 authors = ["Shadowsocks Contributors"]
 description = "shadowsocks is a fast tunnel proxy that helps you bypass firewalls."
 repository = "https://github.com/shadowsocks/shadowsocks-rust"