diff --git a/src/dfx/src/util/ic.did b/src/dfx/src/util/ic.did
index 933293b7db..20872edfeb 100644
--- a/src/dfx/src/util/ic.did
+++ b/src/dfx/src/util/ic.did
@@ -85,6 +85,10 @@ type ecdsa_curve = variant {
     secp256k1;
 };
 
+type vetkd_curve = variant {
+    bls12_381_g2;
+};
+
 type schnorr_algorithm = variant {
     bip340secp256k1;
     ed25519;
@@ -352,6 +356,27 @@ type sign_with_schnorr_result = record {
     signature : blob;
 };
 
+type vetkd_public_key_args = record {
+    canister_id : opt canister_id;
+    context : blob;
+    key_id : record { curve : vetkd_curve; name : text };
+};
+
+type vetkd_public_key_result = record {
+    public_key : blob;
+};
+
+type vetkd_derive_key_args = record {
+    input : blob;
+    context : blob;
+    transport_public_key : blob;
+    key_id : record { curve : vetkd_curve; name : text };
+};
+
+type vetkd_derive_key_result = record {
+    encrypted_key : blob;
+};
+
 type node_metrics_history_args = record {
     subnet_id : principal;
     start_at_timestamp_nanos : nat64;
@@ -462,6 +487,10 @@ service ic : {
     schnorr_public_key : (schnorr_public_key_args) -> (schnorr_public_key_result);
     sign_with_schnorr : (sign_with_schnorr_args) -> (sign_with_schnorr_result);
 
+    // Threshold key derivation
+    vetkd_public_key : (vetkd_public_key_args) -> (vetkd_public_key_result);
+    vetkd_derive_key : (vetkd_derive_key_args) -> (vetkd_derive_key_result);
+
     // bitcoin interface
     bitcoin_get_balance : (bitcoin_get_balance_args) -> (bitcoin_get_balance_result);
     bitcoin_get_utxos : (bitcoin_get_utxos_args) -> (bitcoin_get_utxos_result);