diff --git a/stubs/const.php b/stubs/const.php
index d6f84de9..c2cf7b14 100644
--- a/stubs/const.php
+++ b/stubs/const.php
@@ -18,3 +18,4 @@
 const SECP256K1_TAG_PUBKEY_HYBRID_ODD = 7;
 const SECP256K1_TYPE_RECOVERABLE_SIG = "secp256k1_ecdsa_recoverable_signature";
 const SECP256K1_TYPE_SCHNORRSIG = "secp256k1_schnorrsig";
+const SECP256K1_TYPE_SCHNORRSIG_PUBKEY = "secp256k1_schnorrsig_pubkey";
diff --git a/stubs/functions.php b/stubs/functions.php
index 56d76e39..2ed865ef 100644
--- a/stubs/functions.php
+++ b/stubs/functions.php
@@ -394,6 +394,27 @@ function secp256k1_ecdsa_recover($context, &$ecPublicKey, $ecdsaRecoverableSigna
  * @return int
  */
 function secp256k1_ecdh($context, string &$result, $ecPublicKey, string $privKey, ?callable $hashfxn, ?int $outputLen, $data): int {}
+/**
+ * @param resource $context
+ * @param resource|null $pubkey
+ * @param string $seckey
+ * @return int
+ */
+function secp256k1_schnorrsig_pubkey_create($context, &$pubkey, string $seckey): int {}
+/**
+ * @param resource $context
+ * @param resource|null $pubkey
+ * @param string $input32
+ * @return int
+ */
+function secp256k1_schnorrsig_pubkey_parse($context, &$pubkey, string $input32): int {}
+/**
+ * @param resource $context
+ * @param string|null $output32
+ * @param resource $pubkey
+ * @return int
+ */
+function secp256k1_schnorrsig_pubkey_serialize($context, ?string &$output32, $pubkey): int {}
 /**
  * Serialize a Schnorr signature.
  *