diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 885ef18..191a249 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -2,9 +2,9 @@ name: Rust
 
 on:
   push:
-    branches: ["main"]
+    branches: ["master"]
   pull_request:
-    branches: ["main"]
+    branches: ["master"]
 
 env:
   CARGO_TERM_COLOR: always
@@ -33,9 +33,6 @@ jobs:
       - name: Run tests
         run: cargo test --verbose --all-features
 
-      - name: Documentation
-        run: cargo doc --all-features
-
   msrv:
     name: Verify MSRV (1.85)
     runs-on: ubuntu-latest
@@ -47,4 +44,60 @@ jobs:
         uses: dtolnay/rust-toolchain@1.85.0
 
       - name: Check
-        run: cargo check --all-features
\ No newline at end of file
+        run: cargo check --all-features
+
+  ensure_no_std:
+    name: Ensure no_std
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust Toolchain (nightly)
+        uses: dtolnay/rust-toolchain@nightly
+        with:
+          targets: thumbv6m-none-eabi
+
+      - name: Build (no_std)
+        run: cargo build --no-default-features --target thumbv6m-none-eabi
+        shell: bash
+
+  coverage:
+    name: Coverage
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust Toolchain (stable)
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview
+
+      - name: Install cargo-llvm-cov
+        run: cargo install cargo-llvm-cov
+
+      - name: Run coverage
+        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          files: lcov.info
+          fail_ci_if_error: false
+
+  audit:
+    name: Security Audit
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust Toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install cargo-audit
+        run: cargo install cargo-audit
+
+      - name: Run cargo audit
+        run: cargo audit
diff --git a/Cargo.toml b/Cargo.toml
index f75a9d1..a80dec5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,16 +17,16 @@ dag_cbor = ["dep:multi-cbor", "multi-cbor/tags"]
 
 [dependencies]
 multi-base = { version = "1.0", default-features = false }
-multi-codec = "1.1"
-multi-hash = "1.0"
-multi-trait = { version = "1.0.5", default-features = false }
+multi-cbor = { version = "0.1", optional = true }
+multi-codec = "1.2"
+multi-hash = "1.1"
+multi-trait = { version = "1.0", default-features = false }
 multi-util = "1.1"
 thiserror = "2.0"
 serde = { version = "1.0", default-features = false, features = [
   "alloc",
   "derive",
 ], optional = true }
-multi-cbor = { version = "0.1", optional = true }
 
 [dev-dependencies]
 criterion = "0.8"
diff --git a/src/cid.rs b/src/cid.rs
index 7216887..66186b2 100644
--- a/src/cid.rs
+++ b/src/cid.rs
@@ -4,7 +4,7 @@ use core::fmt;
 use multi_base::Base;
 use multi_codec::Codec;
 use multi_hash::Multihash;
-use multi_trait::{EncodeInto, Null, TryDecodeFrom};
+use multi_trait::{EncodeInto, EncodeIntoBuffer, Null, TryDecodeFrom};
 use multi_util::{
     Base58Encoder, BaseEncoded, BaseEncoder, CodecInfo, DetectedEncoder, EncodingInfo,
 };
@@ -135,6 +135,12 @@ impl EncodeInto for Cid {
     }
 }
 
+impl EncodeIntoBuffer for Cid {
+    fn encode_into_buffer(&self, buffer: &mut Vec<u8>) {
+        buffer.extend_from_slice(&self.clone().encode_into());
+    }
+}
+
 impl<'a> TryFrom<&'a [u8]> for Cid {
     type Error = Error;