diff --git a/src/Library/GrowthRates/GrowthRateLibrary.cpp b/src/Library/GrowthRates/GrowthRateLibrary.cpp
index 0d582ea..7b3be6e 100644
--- a/src/Library/GrowthRates/GrowthRateLibrary.cpp
+++ b/src/Library/GrowthRates/GrowthRateLibrary.cpp
@@ -37,9 +37,9 @@ uint32_t CreatureLib::Library::GrowthRateLibrary::CalculateExperience(uint32_t h
 
 void CreatureLib::Library::GrowthRateLibrary::AddGrowthRate(const ConstString& name,
                                                             CreatureLib::Library::GrowthRate* rate) {
-    _growthRates.insert({name, rate});
+    _growthRates.insert({name, std::unique_ptr<const GrowthRate>(rate)});
 }
 
 void CreatureLib::Library::GrowthRateLibrary::AddGrowthRate(uint32_t hash, CreatureLib::Library::GrowthRate* rate) {
-    _growthRates.insert({hash, rate});
+    _growthRates.insert({hash, std::unique_ptr<const GrowthRate>(rate)});
 }
diff --git a/src/Library/GrowthRates/GrowthRateLibrary.hpp b/src/Library/GrowthRates/GrowthRateLibrary.hpp
index de74d93..27f3e9d 100644
--- a/src/Library/GrowthRates/GrowthRateLibrary.hpp
+++ b/src/Library/GrowthRates/GrowthRateLibrary.hpp
@@ -3,6 +3,7 @@
 
 #include <Arbutils/ConstString.hpp>
 #include <cstdint>
+#include <memory>
 #include <string>
 #include <unordered_map>
 #include "GrowthRate.hpp"
@@ -12,17 +13,13 @@ using ConstString = Arbutils::CaseInsensitiveConstString;
 namespace CreatureLib::Library {
     class GrowthRateLibrary {
     private:
-        std::unordered_map<uint32_t, GrowthRate*> _growthRates;
+        std::unordered_map<uint32_t, std::unique_ptr<const GrowthRate>> _growthRates;
 
     public:
         GrowthRateLibrary(size_t initialCapacity = 10)
-            : _growthRates(std::unordered_map<uint32_t, GrowthRate*>(initialCapacity)) {}
+            : _growthRates(std::unordered_map<uint32_t, std::unique_ptr<const GrowthRate>>(initialCapacity)) {}
 
-        virtual ~GrowthRateLibrary() {
-            for (auto gr : _growthRates) {
-                delete gr.second;
-            }
-        }
+        virtual ~GrowthRateLibrary() = default;
 
         [[nodiscard]] uint8_t CalculateLevel(const ConstString& growthRate, uint32_t experience) const;
         [[nodiscard]] uint8_t CalculateLevel(uint32_t hash, uint32_t experience) const;