diff --git a/Cargo.lock b/Cargo.lock
index 669ebf41..d0bdd822 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1398,7 +1398,7 @@ dependencies = [
 
 [[package]]
 name = "unm_engine"
-version = "0.2.0-pre.3"
+version = "0.2.0-pre.4"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1447,7 +1447,7 @@ dependencies = [
 
 [[package]]
 name = "unm_engine_joox"
-version = "0.2.0-pre.2"
+version = "0.2.0-pre.4"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1567,7 +1567,7 @@ dependencies = [
 
 [[package]]
 name = "unm_engine_ytdl"
-version = "0.2.0-pre.2"
+version = "0.2.0-pre.4"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1638,7 +1638,7 @@ dependencies = [
 
 [[package]]
 name = "unm_types"
-version = "0.2.0-pre.2"
+version = "0.2.0-pre.4"
 dependencies = [
  "derive_builder",
  "reqwest",
diff --git a/engine-base/Cargo.toml b/engine-base/Cargo.toml
index da08e208..f1f497b5 100644
--- a/engine-base/Cargo.toml
+++ b/engine-base/Cargo.toml
@@ -2,7 +2,7 @@
 name = "unm_engine"
 description = "The engine base for UnblockNeteaseMusic, including the executor and the Engine trait."
 license = "LGPL-3.0-or-later"
-version = "0.2.0-pre.3"
+version = "0.2.0-pre.4"
 edition = "2021"
 repository = "https://github.com/UnblockNeteaseMusic/server-rust"
 readme = "../README.md"
diff --git a/engines/joox/Cargo.toml b/engines/joox/Cargo.toml
index 93b8919d..2c572d9f 100644
--- a/engines/joox/Cargo.toml
+++ b/engines/joox/Cargo.toml
@@ -2,7 +2,7 @@
 name = "unm_engine_joox"
 description = "The Joox engine for UnblockNeteaseMusic."
 license = "LGPL-3.0-or-later"
-version = "0.2.0-pre.2"
+version = "0.2.0-pre.4"
 repository = "https://github.com/UnblockNeteaseMusic/server-rust"
 readme = "../../README.md"
 edition = "2021"
diff --git a/engines/ytdl/Cargo.toml b/engines/ytdl/Cargo.toml
index c17459ec..21e0d09f 100644
--- a/engines/ytdl/Cargo.toml
+++ b/engines/ytdl/Cargo.toml
@@ -2,7 +2,7 @@
 name = "unm_engine_ytdl"
 description = "The YtDl (youtube-dl, yt-dlp, …) engine for UnblockNeteaseMusic."
 license = "LGPL-3.0-or-later"
-version = "0.2.0-pre.2"
+version = "0.2.0-pre.4"
 repository = "https://github.com/UnblockNeteaseMusic/server-rust"
 readme = "../../README.md"
 edition = "2021"
diff --git a/types/Cargo.toml b/types/Cargo.toml
index 7054233d..f7c56bc9 100644
--- a/types/Cargo.toml
+++ b/types/Cargo.toml
@@ -2,7 +2,7 @@
 name = "unm_types"
 description = "The type definitions for UnblockNeteaseMusic."
 license = "LGPL-3.0-or-later"
-version = "0.2.0-pre.2"
+version = "0.2.0-pre.4"
 repository = "https://github.com/UnblockNeteaseMusic/server-rust"
 readme = "../README.md"
 edition = "2021"