diff --git a/crates/xwt-cert-utils/src/digest.rs b/crates/xwt-cert-utils/src/digest.rs
index 4d8b0e6..07f4649 100644
--- a/crates/xwt-cert-utils/src/digest.rs
+++ b/crates/xwt-cert-utils/src/digest.rs
@@ -1,3 +1,5 @@
+//! Digest computation.
+
 /// Compute a SHA256 digest for the given data.
 ///
 /// Pass DER certificate here to compute its digest.
diff --git a/crates/xwt-cert-utils/src/fingerprint.rs b/crates/xwt-cert-utils/src/fingerprint.rs
index 50f7cdd..34be2f8 100644
--- a/crates/xwt-cert-utils/src/fingerprint.rs
+++ b/crates/xwt-cert-utils/src/fingerprint.rs
@@ -1,3 +1,5 @@
+//! Fingerprint computation.
+
 /// RFC7469 fingerprint.
 #[cfg(feature = "fingerprint-rfc7469")]
 pub fn rfc7469(cert: &rcgen::Certificate) -> String {
diff --git a/crates/xwt-cert-utils/src/gen.rs b/crates/xwt-cert-utils/src/gen.rs
index 17df1c0..75d57f1 100644
--- a/crates/xwt-cert-utils/src/gen.rs
+++ b/crates/xwt-cert-utils/src/gen.rs
@@ -1,5 +1,7 @@
 //! Certificate generation facilities.
 
+/// The params for certificate generation.
+#[allow(missing_docs)]
 pub struct Params<'a> {
     pub common_name: &'a str,
     pub subject_alt_names: &'a [&'a str],
@@ -9,6 +11,7 @@ pub struct Params<'a> {
 
 #[cfg(feature = "rcgen")]
 impl<'a> Params<'a> {
+    /// Convert params into [`rcgen::CertificateParams`].
     pub fn into_rcgen_params(
         self,
         key_alg: &'static rcgen::SignatureAlgorithm,
@@ -42,6 +45,7 @@ impl<'a> Params<'a> {
         cert_params
     }
 
+    /// Convert params into [`rcgen::Certificate`].
     pub fn into_rcgen_cert(
         self,
         key_alg: &'static rcgen::SignatureAlgorithm,
diff --git a/crates/xwt-cert-utils/src/lib.rs b/crates/xwt-cert-utils/src/lib.rs
index 77c7f2b..3b165bb 100644
--- a/crates/xwt-cert-utils/src/lib.rs
+++ b/crates/xwt-cert-utils/src/lib.rs
@@ -1,7 +1,5 @@
 //! Certificate utils and tooling.
 
-#![allow(missing_docs, clippy::missing_docs_in_private_items)]
-
 pub mod digest;
 pub mod fingerprint;
 pub mod gen;
diff --git a/crates/xwt-cert-utils/src/pem.rs b/crates/xwt-cert-utils/src/pem.rs
index af94eec..914a0d0 100644
--- a/crates/xwt-cert-utils/src/pem.rs
+++ b/crates/xwt-cert-utils/src/pem.rs
@@ -1,3 +1,5 @@
+//! Support for the PEM data-encoding format.
+
 /// A type that represents a PEM-encoded private key.
 pub struct PrivateKey(pub String);
 
@@ -11,6 +13,7 @@ pub fn parse(data: &str) -> Result<Vec<u8>, pem::PemError> {
     Ok(data)
 }
 
+/// Serialize [`rcgen::Certificate`] into PEM format.
 #[cfg(feature = "rcgen")]
 pub fn from_rcgen(cert: &rcgen::Certificate) -> (PrivateKey, Certificate) {
     let key_pem = cert.serialize_private_key_pem();