diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 17ea25c..9c90b0c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,6 +20,8 @@ jobs:
       run: cargo fmt --all -- --check
     - name: Clippy checks
       run: cargo clippy --all-targets -- -D clippy::all -D clippy::cargo  -A clippy::multiple-crate-versions
+    - name: Documentation checks
+      run: RUSTDOCFLAGS="-D warnings" cargo doc --no-deps --document-private-items
     - name: Build
       run: cargo build --verbose
     - name: Run tests
diff --git a/src/token/base64.rs b/src/token/base64.rs
index 360bfe0..d34f049 100644
--- a/src/token/base64.rs
+++ b/src/token/base64.rs
@@ -16,9 +16,11 @@ pub fn decode_str(v: &str) -> Result<Vec<u8>, Error> {
 }
 
 /// a `Vec<u8>` encoded as base64 in human readable serialization
+#[allow(dead_code)]
 #[derive(Debug, PartialEq)]
 pub struct Bytes(Vec<u8>);
 
+#[allow(dead_code)]
 impl Bytes {
     pub fn new() -> Self {
         Bytes(Vec::new())
@@ -73,6 +75,7 @@ impl<'de> Deserialize<'de> for Bytes {
     }
 }
 
+#[allow(dead_code)]
 struct BytesVisitor;
 
 impl Visitor<'_> for BytesVisitor {