diff --git a/Il2CppDumper/Outputs/HeaderConstants.cs b/Il2CppDumper/Outputs/HeaderConstants.cs
index 1b71477..94368ce 100644
--- a/Il2CppDumper/Outputs/HeaderConstants.cs
+++ b/Il2CppDumper/Outputs/HeaderConstants.cs
@@ -277,6 +277,144 @@ struct Il2CppClass
     VirtualInvokeData vtable[255];
 };
 
+";
+
+        public readonly static string HeaderV22 =
+@"struct Il2CppClass_1
+{
+    void* image;
+    void* gc_desc;
+    const char* name;
+    const char* namespaze;
+    Il2CppType* byval_arg;
+    Il2CppType* this_arg;
+    Il2CppClass* element_class;
+    Il2CppClass* castClass;
+    Il2CppClass* declaringType;
+    Il2CppClass* parent;
+    void *generic_class;
+    void* typeDefinition;
+    void* fields;
+    void* events;
+    void* properties;
+    void* methods;
+    Il2CppClass** nestedTypes;
+    Il2CppClass** implementedInterfaces;
+    void* interfaceOffsets;
+};
+
+struct Il2CppClass_2
+{
+    void* rgctx_data;
+    Il2CppClass** typeHierarchy;
+    uint32_t cctor_started;
+    uint32_t cctor_finished;
+    uint64_t cctor_thread;
+    int32_t genericContainerIndex;
+    int32_t customAttributeIndex;
+    uint32_t instance_size;
+    uint32_t actualSize;
+    uint32_t element_size;
+    int32_t native_size;
+    uint32_t static_fields_size;
+    uint32_t thread_static_fields_size;
+    int32_t thread_static_fields_offset;
+    uint32_t flags;
+    uint32_t token;
+    uint16_t method_count;
+    uint16_t property_count;
+    uint16_t field_count;
+    uint16_t event_count;
+    uint16_t nested_type_count;
+    uint16_t vtable_count;
+    uint16_t interfaces_count;
+    uint16_t interface_offsets_count;
+    uint8_t typeHierarchyDepth;
+    uint8_t genericRecursionDepth;
+    uint8_t rank;
+    uint8_t minimumAlignment;
+    uint8_t packingSize;
+    uint8_t bitflags1;
+    uint8_t bitflags2;
+};
+
+struct Il2CppClass
+{
+    Il2CppClass_1 _1;
+    void* static_fields;
+    Il2CppClass_2 _2;
+    VirtualInvokeData vtable[255];
+};
+
+";
+
+        public readonly static string HeaderV21 =
+@"struct Il2CppClass_1
+{
+    void* image;
+    void* gc_desc;
+    const char* name;
+    const char* namespaze;
+    Il2CppType* byval_arg;
+    Il2CppType* this_arg;
+    Il2CppClass* element_class;
+    Il2CppClass* castClass;
+    Il2CppClass* declaringType;
+    Il2CppClass* parent;
+    void *generic_class;
+    void* typeDefinition;
+    void* fields;
+    void* events;
+    void* properties;
+    void* methods;
+    Il2CppClass** nestedTypes;
+    Il2CppClass** implementedInterfaces;
+    VirtualInvokeData* vtable;
+    void* interfaceOffsets;
+};
+
+struct Il2CppClass_2
+{
+    void* rgctx_data;
+    Il2CppClass** typeHierarchy;
+    uint32_t cctor_started;
+    uint32_t cctor_finished;
+    uint64_t cctor_thread;
+    int32_t genericContainerIndex;
+    int32_t customAttributeIndex;
+    uint32_t instance_size;
+    uint32_t actualSize;
+    uint32_t element_size;
+    int32_t native_size;
+    uint32_t static_fields_size;
+    uint32_t thread_static_fields_size;
+    int32_t thread_static_fields_offset;
+    uint32_t flags;
+    uint32_t token;
+    uint16_t method_count;
+    uint16_t property_count;
+    uint16_t field_count;
+    uint16_t event_count;
+    uint16_t nested_type_count;
+    uint16_t vtable_count;
+    uint16_t interfaces_count;
+    uint16_t interface_offsets_count;
+    uint8_t typeHierarchyDepth;
+    uint8_t rank;
+    uint8_t minimumAlignment;
+    uint8_t packingSize;
+    uint8_t bitflags1;
+    uint8_t bitflags2;
+};
+
+struct Il2CppClass
+{
+    Il2CppClass_1 _1;
+    void* static_fields;
+    Il2CppClass_2 _2;
+    VirtualInvokeData vtable[255];
+};
+
 ";
     }
 }
diff --git a/Il2CppDumper/Outputs/ScriptGenerator.cs b/Il2CppDumper/Outputs/ScriptGenerator.cs
index 2d82682..577e336 100644
--- a/Il2CppDumper/Outputs/ScriptGenerator.cs
+++ b/Il2CppDumper/Outputs/ScriptGenerator.cs
@@ -291,6 +291,12 @@ namespace Il2CppDumper
             sb.Append(HeaderConstants.GenericHeader);
             switch (il2Cpp.Version)
             {
+                case 22f:
+                    sb.Append(HeaderConstants.HeaderV22);
+                    break;
+                case 23f:
+                    sb.Append(HeaderConstants.HeaderV240);
+                    break;
                 case 24f:
                     sb.Append(HeaderConstants.HeaderV240);
                     break;
@@ -300,9 +306,10 @@ namespace Il2CppDumper
                 case 24.2f:
                     sb.Append(HeaderConstants.HeaderV242);
                     break;
+                //TODO
                 default:
-                    sb.Append(HeaderConstants.HeaderV242);
-                    break;
+                    Console.WriteLine($"WARNING: This il2cpp version [{il2Cpp.Version}] does not support generating .h files");
+                    return;
             }
             sb.Append(preHeader);
             sb.Append(headerStruct);