diff --git a/.idea/cmake.xml b/.idea/cmake.xml
index 4f2501f..221a8cc 100644
--- a/.idea/cmake.xml
+++ b/.idea/cmake.xml
@@ -2,9 +2,9 @@
 <project version="4">
   <component name="CMakeSharedSettings">
     <configurations>
-      <configuration PROFILE_NAME="Debug" ENABLED="true" CONFIG_NAME="Debug" GENERATION_OPTIONS="-G Ninja" />
-      <configuration PROFILE_NAME="Debug Coverage" ENABLED="true" CONFIG_NAME="Debug" GENERATION_OPTIONS="-G Ninja -DENABLE_COVERAGE=ON" />
-      <configuration PROFILE_NAME="Release" ENABLED="true" CONFIG_NAME="Release" GENERATION_OPTIONS="-G Ninja" />
+      <configuration PROFILE_NAME="Debug" ENABLED="true" CONFIG_NAME="Debug" GENERATION_OPTIONS="-G Ninja -DJSON_SystemInclude=ON" />
+      <configuration PROFILE_NAME="Debug Coverage" ENABLED="true" CONFIG_NAME="Debug" GENERATION_OPTIONS="-G Ninja -DENABLE_COVERAGE=ON -DJSON_SystemInclude=ON" />
+      <configuration PROFILE_NAME="Release" ENABLED="true" CONFIG_NAME="Release" GENERATION_OPTIONS="-G Ninja -DJSON_SystemInclude=ON" />
     </configurations>
   </component>
 </project>
\ No newline at end of file
diff --git a/include/billy_objects.hpp b/include/billy_objects.hpp
index 6f8462b..7a9e765 100644
--- a/include/billy_objects.hpp
+++ b/include/billy_objects.hpp
@@ -11,6 +11,7 @@
 #include <variant>
 #include <string_view>
 #include <unordered_map>
+#include <nlohmann/json_fwd.hpp>
 #include "generic_object.hpp"
 
 
@@ -22,7 +23,7 @@ namespace character {
 
     class BillyObjects final {
     public:
-        static constexpr std::size_t max_num_obj{ 3 };
+        using json = nlohmann::json;
         using container = std::unordered_map<billyEnums, billyObjects>;
 
         static constexpr std::array<billyEnums, 12> all_objects{
diff --git a/src/billy_objects.cpp b/src/billy_objects.cpp
index d2d40f4..6b7ce6e 100644
--- a/src/billy_objects.cpp
+++ b/src/billy_objects.cpp
@@ -1,6 +1,7 @@
 #include "billy_objects.hpp"
 #include "characteristic.hpp"
 #include "character_sheet.hpp"
+#include <nlohmann/json.hpp>
 
 std::uint32_t constexpr const_hash(const char *input) {
     return *input ? static_cast<unsigned int>(*input) + 33 * const_hash(input + 1) : 5381;