diff --git a/rustica/src/logging/influx.rs b/rustica/src/logging/influx.rs
index c4649e75..3997b5dd 100644
--- a/rustica/src/logging/influx.rs
+++ b/rustica/src/logging/influx.rs
@@ -54,6 +54,7 @@ impl RusticaLogger for InfluxLogger {
                     .into_query(&self.dataset)
                     .add_tag("fingerprint", ci.fingerprint.clone())
                     .add_tag("mtls_identities", ci.mtls_identities.join(","))
+                    .add_tag("serial", ci.serial)
                     .add_field("principals", ci.principals.join(","));
 
                 let client = self.client.clone();
diff --git a/rustica/src/logging/mod.rs b/rustica/src/logging/mod.rs
index 7bd05b3e..c59eb6bd 100644
--- a/rustica/src/logging/mod.rs
+++ b/rustica/src/logging/mod.rs
@@ -41,6 +41,8 @@ pub struct CertificateIssued {
     pub fingerprint: String,
     /// The fingerprint of the signing certificate
     pub signed_by: String,
+    /// The serial number of the signed certificate
+    pub serial: u64,
     /// The configured authority name for the signer
     pub authority: String,
     /// Certificate type, either User or Host
diff --git a/rustica/src/logging/stdout.rs b/rustica/src/logging/stdout.rs
index 4ba81ac7..7e545543 100644
--- a/rustica/src/logging/stdout.rs
+++ b/rustica/src/logging/stdout.rs
@@ -18,7 +18,7 @@ impl RusticaLogger for StdoutLogger {
         match &log.log {
             Log::CertificateIssued(ci) => {
                 info!(
-                    "[{}] Certificate issued for: [{}] Authority: [{}] Identified by: [{}] Principals granted: [{}] Extensions: [{:?}] CriticalOptions: [{:?}] Valid After: [{}] Valid Before: [{}]",
+                    "[{}] Certificate issued for: [{}] Authority: [{}] Identified by: [{}] Principals granted: [{}] Extensions: [{:?}] CriticalOptions: [{:?}] Valid After: [{}] Valid Before: [{}] Serial Number: [{}]",
                     ci.certificate_type,
                     ci.fingerprint,
                     ci.authority,
@@ -28,6 +28,7 @@ impl RusticaLogger for StdoutLogger {
                     ci.critical_options,
                     ci.valid_after,
                     ci.valid_before,
+                    ci.serial,
                 )
             }
             Log::KeyRegistered(kr) => info!("Key registered: [{}] Identified by: [{}]", kr.fingerprint, kr.mtls_identities.join(", ")),
diff --git a/rustica/src/server.rs b/rustica/src/server.rs
index 00a8e7a8..11fb7c68 100644
--- a/rustica/src/server.rs
+++ b/rustica/src/server.rs
@@ -634,6 +634,7 @@ impl Rustica for RusticaServer {
                 fingerprint,
                 signed_by: ca_cert.fingerprint().hash,
                 authority: authority.to_string(),
+                serial: authorization.serial,
                 certificate_type: req_cert_type.to_string(),
                 mtls_identities,
                 principals: authorization.principals,