diff --git a/Cargo.lock b/Cargo.lock
index 1cd7eae7..5668e323 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -424,7 +424,7 @@ dependencies = [
 
 [[package]]
 name = "pilota"
-version = "0.4.0"
+version = "0.4.0-alpha.0"
 dependencies = [
  "anyhow",
  "async-recursion",
@@ -442,7 +442,7 @@ dependencies = [
 
 [[package]]
 name = "pilota-build"
-version = "0.4.0"
+version = "0.4.0-alpha.0"
 dependencies = [
  "async-trait",
  "derivative",
diff --git a/pilota-build/Cargo.toml b/pilota-build/Cargo.toml
index d1a79ce3..d482d6e9 100644
--- a/pilota-build/Cargo.toml
+++ b/pilota-build/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pilota-build"
-version = "0.4.0"
+version = "0.4.0-alpha.0"
 edition = "2021"
 description = "Compile thrift and protobuf idl into rust code at compile-time."
 documentation = "https://docs.rs/pilota-build"
diff --git a/pilota/Cargo.toml b/pilota/Cargo.toml
index 4ff55a1d..ca5dac41 100644
--- a/pilota/Cargo.toml
+++ b/pilota/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pilota"
-version = "0.4.0"
+version = "0.4.0-alpha.0"
 edition = "2021"
 description = "Pilota is a thrift and protobuf implementation in pure rust with high performance and extensibility."
 documentation = "https://docs.rs/pilota"