diff --git a/api/src/api/bitcoin.rs b/api/src/api/bitcoin.rs
index 6508c9c..821f280 100644
--- a/api/src/api/bitcoin.rs
+++ b/api/src/api/bitcoin.rs
@@ -23,3 +23,10 @@ pub struct BroadcastTransaction {
     #[n(1)]
     pub psbt: Vec<u8>,
 }
+
+// If None, there's no passphrase, hide passphrased accounts
+#[quantum_link]
+pub struct ApplyPassphrase {
+    #[n(0)]
+    pub fingerprint: Option<String>,
+}
diff --git a/api/src/api/message.rs b/api/src/api/message.rs
index f9eca59..79135a7 100644
--- a/api/src/api/message.rs
+++ b/api/src/api/message.rs
@@ -103,6 +103,8 @@ pub enum QuantumLinkMessage {
     BroadcastTransaction(#[n(0)] BroadcastTransaction),
     #[n(13)]
     AccountUpdate(#[n(0)] AccountUpdate),
+    #[n(27)]
+    ApplyPassphrase(#[n(0)] ApplyPassphrase),
     #[n(14)]
     SecurityCheck(#[n(0)] SecurityCheck),
     #[n(15)]