diff --git a/include/openssl/x509.h b/include/openssl/x509.h
index 138c060e..62bd5f89 100644
--- a/include/openssl/x509.h
+++ b/include/openssl/x509.h
@@ -1113,6 +1113,7 @@ BORINGSSL_MAKE_DELETER(X509_NAME, X509_NAME_free)
 BORINGSSL_MAKE_DELETER(X509_NAME_ENTRY, X509_NAME_ENTRY_free)
 BORINGSSL_MAKE_DELETER(X509_PKEY, X509_PKEY_free)
 BORINGSSL_MAKE_DELETER(X509_POLICY_TREE, X509_policy_tree_free)
+BORINGSSL_MAKE_DELETER(X509_PUBKEY, X509_PUBKEY_free)
 BORINGSSL_MAKE_DELETER(X509_REQ, X509_REQ_free)
 BORINGSSL_MAKE_DELETER(X509_REVOKED, X509_REVOKED_free)
 BORINGSSL_MAKE_DELETER(X509_SIG, X509_SIG_free)