diff --git a/Crafter.Build-Configuration.cpp b/Crafter.Build-Configuration.cpp
index 2e55a1c..e50fc85 100644
--- a/Crafter.Build-Configuration.cpp
+++ b/Crafter.Build-Configuration.cpp
@@ -28,7 +28,7 @@ Configuration::Configuration(std::string name, std::string standard, std::vector
 
 }
 
-Configuration::Configuration(nlohmann::json& configs, nlohmann::json& config, fs::path workingDir) {
+Configuration::Configuration(const nlohmann::json& configs, const nlohmann::json& config, fs::path workingDir) {
      name = config["name"].get<std::string>();
      for (auto& [key, val] : config.items())
      {
diff --git a/Crafter.Build-Configuration.cppm b/Crafter.Build-Configuration.cppm
index 1c921c4..ef5e2c8 100644
--- a/Crafter.Build-Configuration.cppm
+++ b/Crafter.Build-Configuration.cppm
@@ -43,6 +43,6 @@ export namespace Crafter::Build {
         std::vector<Dependency> dependencies;
         std::unordered_map<std::string, nlohmann::json> additionalProperties;
         Configuration(std::string name, std::string standard, std::vector<fs::path> sourceFiles, std::vector<fs::path> moduleFiles, std::string optimizationLevel, std::string buildDir, std::string outputDir, std::string type, std::string target, std::vector<Dependency> dependencies);
-        Configuration(nlohmann::json& configs, nlohmann::json& config, fs::path workingDir);
+        Configuration(const nlohmann::json& configs, const nlohmann::json& config, fs::path workingDir);
     };
 }