diff --git a/package.xml b/package.xml
index 7eb7ddb..46dd010 100644
--- a/package.xml
+++ b/package.xml
@@ -50,6 +50,7 @@
   <!-- Use doc_depend for packages you need only for building documentation: -->
   <!--   <doc_depend>doxygen</doc_depend> -->
   <buildtool_depend>catkin</buildtool_depend>
+  <buildtool_depend>code_utils</buildtool_depend>
 
 
   <!-- The export tag contains other, unspecified, tags -->
diff --git a/src/imu_an.cpp b/src/imu_an.cpp
index 93a9b52..c9fe1ae 100644
--- a/src/imu_an.cpp
+++ b/src/imu_an.cpp
@@ -12,6 +12,7 @@
 #include <code_utils/ros_utils.h>
 #include <geometry_msgs/Vector3Stamped.h>
 #include <iostream>
+#include <fstream>
 #include <mutex>
 #include <opencv2/opencv.hpp>
 #include <queue>