diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0fdccab..0cf8643 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -69,6 +69,12 @@ add_custom_target(copy_shaders ALL
   ${CMAKE_SOURCE_DIR}/shaders ${CMAKE_BINARY_DIR}/shaders
 )
 
+# Custom target for shaders
+add_custom_target(copy_hgt ALL
+  COMMAND ${CMAKE_COMMAND} -E copy_directory
+  ${CMAKE_SOURCE_DIR}/hgt ${CMAKE_BINARY_DIR}/hgt
+)
+
 # Set subsystem based on build type
 if (WIN32)
     if (CMAKE_BUILD_TYPE STREQUAL "Release")
@@ -79,4 +85,4 @@ if (WIN32)
 endif()
 
 # Ensure shaders are copied before building the executable
-add_dependencies(TerraVisor copy_shaders)
+add_dependencies(TerraVisor copy_shaders copy_hgt)