diff --git a/crates/derive/keyfork-derive-openpgp/src/main.rs b/crates/derive/keyfork-derive-openpgp/src/main.rs
index 15b21f8..6b3d544 100644
--- a/crates/derive/keyfork-derive-openpgp/src/main.rs
+++ b/crates/derive/keyfork-derive-openpgp/src/main.rs
@@ -121,7 +121,7 @@ fn run() -> Result<(), Box<dyn std::error::Error>> {
 
     let mut w = Writer::new(std::io::stdout(), Kind::SecretKey)?;
 
-    for packet in cert.into_packets2() {
+    for packet in cert.as_tsk().into_packets() {
         packet.serialize(&mut w)?;
     }
 
diff --git a/crates/keyfork/src/cli/derive.rs b/crates/keyfork/src/cli/derive.rs
index 3f28856..2811856 100644
--- a/crates/keyfork/src/cli/derive.rs
+++ b/crates/keyfork/src/cli/derive.rs
@@ -124,7 +124,7 @@ impl OpenPGP {
 
         let mut w = Writer::new(std::io::stdout(), Kind::SecretKey)?;
 
-        for packet in cert.into_packets2() {
+        for packet in cert.as_tsk().into_packets() {
             packet.serialize(&mut w)?;
         }