diff --git a/redfish-core/src/filter_expr_executor.cpp b/redfish-core/src/filter_expr_executor.cpp
index 441b4bb..f323d3f 100644
--- a/redfish-core/src/filter_expr_executor.cpp
+++ b/redfish-core/src/filter_expr_executor.cpp
@@ -5,6 +5,8 @@
 #include "logging.hpp"
 #include "utils/time_utils.hpp"
 
+#include <nlohmann/json.hpp>
+
 #include <algorithm>
 #include <array>
 #include <cmath>
diff --git a/redfish-core/src/utils/dbus_utils.cpp b/redfish-core/src/utils/dbus_utils.cpp
index 3fe2fb4..8421c22 100644
--- a/redfish-core/src/utils/dbus_utils.cpp
+++ b/redfish-core/src/utils/dbus_utils.cpp
@@ -10,6 +10,7 @@
 #include <boost/asio/error.hpp>
 #include <boost/beast/http/status.hpp>
 #include <boost/system/error_code.hpp>
+#include <nlohmann/json.hpp>
 #include <sdbusplus/message.hpp>
 
 #include <memory>
diff --git a/test/http/utility_test.cpp b/test/http/utility_test.cpp
index 36725ef..0924597 100644
--- a/test/http/utility_test.cpp
+++ b/test/http/utility_test.cpp
@@ -5,6 +5,7 @@
 #include <boost/url/parse.hpp>
 #include <boost/url/url.hpp>
 #include <boost/url/url_view.hpp>
+#include <nlohmann/json.hpp>
 
 #include <algorithm>
 #include <ctime>