diff --git a/src/ca-module.cpp b/src/ca-module.cpp
index 12fff93..7f51eba 100644
--- a/src/ca-module.cpp
+++ b/src/ca-module.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2017-2023, Regents of the University of California.
+ * Copyright (c) 2017-2024, Regents of the University of California.
  *
  * This file is part of ndncert, a certificate management system based on NDN.
  *
@@ -32,6 +32,7 @@
 #include <ndn-cxx/security/signing-helpers.hpp>
 #include <ndn-cxx/security/verification-helpers.hpp>
 #include <ndn-cxx/util/io.hpp>
+#include <ndn-cxx/util/logger.hpp>
 #include <ndn-cxx/util/random.hpp>
 #include <ndn-cxx/util/string-helper.hpp>