diff --git a/examples/main.rs b/examples/main.rs
index b1172ca..77faa9e 100644
--- a/examples/main.rs
+++ b/examples/main.rs
@@ -1,3 +1,4 @@
+use async_trait::async_trait;
 use tokio_gemini::{
     certs::{
         dane, file_sscv::KnownHostsFile, fingerprint::CertFingerprint, SelfsignedCertVerifier,
@@ -120,10 +121,11 @@ struct CertVerifier {
     dns: Option<DnsClient>,
 }
 
+#[async_trait]
 impl SelfsignedCertVerifier for CertVerifier {
-    async fn verify<'c>(
+    async fn verify(
         &self,
-        cert: &'c tokio_gemini::certs::CertificateDer<'c>,
+        cert: &tokio_gemini::certs::CertificateDer<'_>,
         host: &str,
         port: u16,
     ) -> Result<bool, tokio_gemini::LibError> {
diff --git a/examples/simple.rs b/examples/simple.rs
index dab66cd..91522f4 100644
--- a/examples/simple.rs
+++ b/examples/simple.rs
@@ -1,3 +1,4 @@
+use async_trait::async_trait;
 use tokio_gemini::{
     certs::{fingerprint::CertFingerprint, SelfsignedCertVerifier},
     Client, LibError,
@@ -32,10 +33,11 @@ async fn main() -> Result<(), LibError> {
 
 struct CertVerifier;
 
+#[async_trait]
 impl SelfsignedCertVerifier for CertVerifier {
-    async fn verify<'c>(
+    async fn verify(
         &self,
-        cert: &'c tokio_gemini::certs::CertificateDer<'c>,
+        cert: &tokio_gemini::certs::CertificateDer<'_>,
         host: &str,
         port: u16,
     ) -> Result<bool, tokio_gemini::LibError> {
diff --git a/src/certs/mod.rs b/src/certs/mod.rs
index bb728ed..e4f30b7 100644
--- a/src/certs/mod.rs
+++ b/src/certs/mod.rs
@@ -17,9 +17,9 @@ pub use tokio_rustls::rustls::pki_types::{CertificateDer, ServerName, UnixTime};
 /// It is recommended to use helpers from file_sscv.
 #[async_trait]
 pub trait SelfsignedCertVerifier: Send + Sync {
-    async fn verify<'c>(
+    async fn verify(
         &self,
-        cert: &'c CertificateDer<'c>,
+        cert: &CertificateDer<'_>,
         host: &str,
         port: u16,
         // now: UnixTime,