diff --git a/libs/rust/Cargo.lock b/libs/rust/Cargo.lock
index b8d8dc2..0367a03 100644
--- a/libs/rust/Cargo.lock
+++ b/libs/rust/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "dalet"
-version = "1.0.0-pre0"
+version = "1.0.0-pre1"
 dependencies = [
  "serde",
 ]
diff --git a/libs/rust/Cargo.toml b/libs/rust/Cargo.toml
index 90b5678..c738659 100644
--- a/libs/rust/Cargo.toml
+++ b/libs/rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "dalet"
-version = "1.0.0-pre0"
+version = "1.0.0-pre1"
 edition = "2021"
 authors = ["artegoser"]
 license = "MIT"
diff --git a/libs/rust/src/types.rs b/libs/rust/src/types.rs
index f2c2638..198b61f 100644
--- a/libs/rust/src/types.rs
+++ b/libs/rust/src/types.rs
@@ -1,6 +1,6 @@
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Debug)]
 pub struct Tag {
     id: i8,
     body: Body,
@@ -13,16 +13,42 @@ impl Tag {
     }
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Debug)]
 pub enum Body {
     Text(String),
     Tag(Box<Tag>),
     Null,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+impl Serialize for Body {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        match *self {
+            Body::Text(ref text) => serializer.serialize_str(text),
+            Body::Tag(ref tag) => tag.serialize(serializer),
+            Body::Null => serializer.serialize_str("null"),
+        }
+    }
+}
+
+#[derive(Debug)]
 pub enum Argument {
     Text(String),
     Number(i8),
     Null,
 }
+
+impl Serialize for Argument {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        match *self {
+            Argument::Text(ref text) => serializer.serialize_str(text),
+            Argument::Number(number) => serializer.serialize_i8(number),
+            Argument::Null => serializer.serialize_str("null"),
+        }
+    }
+}