diff --git a/source/postcard2-eio/Cargo.toml b/source/postcard2-eio/Cargo.toml
index 30ef2ae..6bd607d 100644
--- a/source/postcard2-eio/Cargo.toml
+++ b/source/postcard2-eio/Cargo.toml
@@ -1,10 +1,27 @@
 [package]
 name = "postcard2-eio"
-version = "0.1.0"
+version = "0.2.0"
+authors = ["James Munns <james@onevariable.com>"]
 edition = "2024"
+readme = "README.md"
+repository = "https://github.com/jamesmunns/postcard"
+description = "postcard2 extensions crate"
+license = "MIT OR Apache-2.0"
+categories = [
+    "embedded",
+    "no-std",
+]
+keywords = [
+    "serde",
+]
+documentation = "https://docs.rs/postcarde-eio/"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
 
 [dependencies]
-postcard2 = { version = "0.1.0", path = "../postcard2", default-features = false }
+postcard2 = { version = "0.2.0", path = "../postcard2", default-features = false }
 serde_core = { version = "1.0.228", default-features = false }
 
 [dependencies.embedded_io_v0_7]
diff --git a/source/postcard2-heapless/Cargo.toml b/source/postcard2-heapless/Cargo.toml
index d67ddfd..4e33514 100644
--- a/source/postcard2-heapless/Cargo.toml
+++ b/source/postcard2-heapless/Cargo.toml
@@ -1,10 +1,27 @@
 [package]
 name = "postcard2-heapless"
-version = "0.1.0"
+version = "0.2.0"
+authors = ["James Munns <james@onevariable.com>"]
 edition = "2024"
+readme = "README.md"
+repository = "https://github.com/jamesmunns/postcard"
+description = "postcard2 extension crate"
+license = "MIT OR Apache-2.0"
+categories = [
+    "embedded",
+    "no-std",
+]
+keywords = [
+    "serde",
+]
+documentation = "https://docs.rs/postcard2-heapless/"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
 
 [dependencies]
-postcard2 = { version = "0.1.0", path = "../postcard2", default-features = false }
+postcard2 = { version = "0.2.0", path = "../postcard2", default-features = false }
 serde_core = { version = "1.0.228", default-features = false }
 
 [dependencies.heapless_v0_9]
diff --git a/source/postcard2/Cargo.toml b/source/postcard2/Cargo.toml
index d6c7c3f..332f891 100644
--- a/source/postcard2/Cargo.toml
+++ b/source/postcard2/Cargo.toml
@@ -1,8 +1,8 @@
 [package]
 name = "postcard2"
-version = "0.1.0"
+version = "0.2.0"
 authors = ["James Munns <james@onevariable.com>"]
-edition = "2021"
+edition = "2024"
 readme = "README.md"
 repository = "https://github.com/jamesmunns/postcard"
 description = "A no_std + serde compatible message library for Rust"
diff --git a/source/postcard2/src/de/deserializer.rs b/source/postcard2/src/de/deserializer.rs
index 46daa62..cb999ab 100644
--- a/source/postcard2/src/de/deserializer.rs
+++ b/source/postcard2/src/de/deserializer.rs
@@ -6,6 +6,7 @@ use core::marker::PhantomData;
 
 /// The deserialization error type
 #[derive(Debug, PartialEq, Eq)]
+#[non_exhaustive]
 pub enum DeserializerError<PopErr, FinErr> {
     /// A Flavor-specific error occurred while extracting data
     PopError(PopErr),
diff --git a/source/postcard2/src/lib.rs b/source/postcard2/src/lib.rs
index e43c427..6e2af76 100644
--- a/source/postcard2/src/lib.rs
+++ b/source/postcard2/src/lib.rs
@@ -7,7 +7,7 @@ mod de;
 
 pub mod fixint;
 mod ser;
-/// todo: keep public?
+// todo: keep public?
 pub mod varint;
 
 pub use de::deserializer::{Deserializer, DeserializerError};
diff --git a/source/postcard2/src/ser/serializer.rs b/source/postcard2/src/ser/serializer.rs
index 3c96923..6a850d7 100644
--- a/source/postcard2/src/ser/serializer.rs
+++ b/source/postcard2/src/ser/serializer.rs
@@ -1,4 +1,4 @@
-use serde_core::{ser, Serialize};
+use serde_core::{Serialize, ser};
 
 use crate::ser::flavors::Flavor;
 use crate::varint::*;
@@ -22,6 +22,7 @@ where
 
 /// The serialization error type
 #[derive(Debug)]
+#[non_exhaustive]
 pub enum SerializerError<PushErr, FinErr> {
     /// A Flavor-specific error occurred while inserting data
     PushError(PushErr),
diff --git a/source/postcard2/src/varint.rs b/source/postcard2/src/varint.rs
index 9cafc7c..58bf880 100644
--- a/source/postcard2/src/varint.rs
+++ b/source/postcard2/src/varint.rs
@@ -1,3 +1,5 @@
+//! Varint tools
+
 /// Returns the maximum number of bytes required to encode T.
 pub const fn varint_max<T: Sized>() -> usize {
     const BITS_PER_BYTE: usize = 8;