diff --git a/CMakeLists.txt b/CMakeLists.txt
index e56197a..75bf0a9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,11 @@ IF(NOT TARGET loguru)
   set_property(TARGET loguru PROPERTY POSITION_INDEPENDENT_CODE 1)
 ENDIF()
 
+IF(NOT TARGET nlohmann_json::nlohmann_json)
+set(JSON_BuildTests OFF CACHE INTERNAL "")
+add_subdirectory(libs/json EXCLUDE_FROM_ALL)
+ENDIF()
+
 
 set(WHISPER_SOURCES
   include/Whisper/Data/Classification.hpp
@@ -26,7 +31,7 @@ set(WHISPER_SOURCES
   include/Whisper/Tree/Node.hpp
 )
 
-set(WHISPER_REQUIRED_LIBRARIES loguru)
+set(WHISPER_REQUIRED_LIBRARIES loguru nlohmann_json::nlohmann_json )
 
 add_library(objlib OBJECT ${WHISPER_SOURCES})
 set_property(TARGET objlib PROPERTY POSITION_INDEPENDENT_CODE 1)