diff --git a/src/main/java/KryoBeanDefinition.kt b/src/main/java/KryoBeanDefinition.kt
index fa92234..2c1f868 100644
--- a/src/main/java/KryoBeanDefinition.kt
+++ b/src/main/java/KryoBeanDefinition.kt
@@ -1,4 +1,5 @@
 import com.esotericsoftware.kryo.Kryo
+import com.esotericsoftware.kryo.Serializer
 import com.esotericsoftware.kryo.io.Input
 import com.esotericsoftware.kryo.io.Output
 import org.koin.core.context.GlobalContext
@@ -6,13 +7,16 @@ import org.koin.core.definition.BeanDefinition
 import org.koin.core.definition.Definition
 import org.koin.core.definition.Kind
 import org.koin.core.parameter.ParametersHolder
+import org.koin.core.qualifier.Qualifier
 import org.koin.core.qualifier.StringQualifier
+import org.koin.core.qualifier.TypeQualifier
 import org.koin.core.scope.Scope
 import org.koin.core.scope.ScopeID
 import java.awt.Dimension
 import java.io.File
 import java.io.FileInputStream
 import java.io.FileOutputStream
+import kotlin.reflect.KClass
 
 fun main() {
     val saveFile = File("file.bin")
@@ -20,7 +24,7 @@ fun main() {
 
     val smthg: Definition<Dimension> = { it -> Dimension() }
 
-    val beanDef =         BeanDefinition<Dimension>(
+    val beanDef = BeanDefinition(
         StringQualifier("foo"),
         Dimension::class,
         definition = smthg,
@@ -46,11 +50,99 @@ fun main() {
 }
 
 
-private fun buildKryo(): Kryo {
+fun buildKryo(): Kryo {
     val kryo = Kryo()
 
+    kryo.setOptimizedGenerics(false);
     kryo.setReferences(true)
     kryo.isRegistrationRequired = false
 
+//    kryo.register(InstanceRegistry::class.java, object : FieldSerializer<Any?>(kryo, BeanDefinition::class.java) {
+//        override fun create(kryo: Kryo, input: Input, type: Class<*>?): BeanDefinition {
+//            return BeanDefinition()
+//        }
+//    })
+    kryo.register(BeanDefinition::class.java, object : Serializer<BeanDefinition<*>>() {
+
+        override fun write(kryo: Kryo?, output: Output?, beanDef: BeanDefinition<*>) {
+            kryo!!.writeObject(output, beanDef.scopeQualifier)
+            kryo.writeClassAndObject(output, beanDef.primaryType)
+            kryo.writeObjectOrNull(output, beanDef.qualifier, Qualifier::class.java)
+            kryo.writeClassAndObject(output, beanDef.definition)
+            kryo.writeObject(output, beanDef.kind)
+            kryo.writeClassAndObject(output, beanDef.secondaryTypes)
+
+            println(beanDef)
+        }
+
+        override fun read(
+            kryo: Kryo?,
+            input: Input?,
+            type: Class<out BeanDefinition<*>>?
+        ): BeanDefinition<*> {
+
+            val scopeQualifier = kryo!!.readObject(input, StringQualifier::class.java)
+            val primaryType = kryo.readClassAndObject(input) as KClass<*>
+            val qualifier = kryo.readObjectOrNull(input, Qualifier::class.java)
+            val definition = kryo.readClassAndObject(input) as Definition<*>
+            val kind = kryo.readObject(input, Kind::class.java)
+            val secondaryTypes = kryo.readClassAndObject(input) as List<KClass<*>>
+
+            return BeanDefinition(scopeQualifier, primaryType, qualifier, definition, kind, secondaryTypes)
+        }
+    })
+
+
+    kryo.register(TypeQualifier::class.java, object : Serializer<TypeQualifier>() {
+
+        override fun write(kryo: Kryo?, output: Output?, qualifier: TypeQualifier) {
+            kryo!!.writeObjectOrNull(output, qualifier.type, TypeQualifier::class.java)
+        }
+
+        override fun read(
+            kryo: Kryo?,
+            input: Input?,
+            type: Class<out TypeQualifier>?
+        ): TypeQualifier {
+
+            val type = kryo!!.readObjectOrNull(input, KClass::class.java)
+            return TypeQualifier(type)
+        }
+    })
+
+    kryo.register(StringQualifier::class.java, object : Serializer<StringQualifier>() {
+
+        override fun write(kryo: Kryo?, output: Output?, qualifier: StringQualifier) {
+            kryo!!.writeObject(output, qualifier.value)
+        }
+
+        override fun read(
+            kryo: Kryo?,
+            input: Input?,
+            type: Class<out StringQualifier>?
+        ): StringQualifier {
+
+            val value = kryo!!.readObjectOrNull(input, String::class.java)
+            return StringQualifier(value)
+        }
+    })
+
+    kryo.register(kotlin.jvm.internal.ClassReference::class.java, object : Serializer<kotlin.jvm.internal.ClassReference>() {
+
+        override fun write(kryo: Kryo?, output: Output?, qualifier: kotlin.jvm.internal.ClassReference) {
+            kryo!!.writeClassAndObject(output, qualifier.jClass)
+        }
+
+        override fun read(
+            kryo: Kryo?,
+            input: Input?,
+            type: Class<out kotlin.jvm.internal.ClassReference>?
+        ): kotlin.jvm.internal.ClassReference {
+
+            val value = kryo!!.readClassAndObject(input) as java.lang.Class<*>
+            return kotlin.jvm.internal.ClassReference(value)
+        }
+    })
+
     return kryo
 }
\ No newline at end of file
diff --git a/src/main/java/KryoDefinition.kt b/src/main/java/KryoDefinition.kt
index 8638b90..61dfca4 100644
--- a/src/main/java/KryoDefinition.kt
+++ b/src/main/java/KryoDefinition.kt
@@ -14,7 +14,7 @@ import java.io.FileOutputStream
 
 fun main() {
     val saveFile = File("file.bin")
-    val kryo = buildKryo()
+    val kryo = buildKryoDefinition()
 
     val smthg: Definition<Dimension> = { it -> Dimension() }
 
@@ -35,7 +35,7 @@ fun main() {
 }
 
 
-private fun buildKryo(): Kryo {
+private fun buildKryoDefinition(): Kryo {
 
     val kryo = Kryo()
 
diff --git a/src/main/java/KryoInstanceFactory.kt b/src/main/java/KryoInstanceFactory.kt
index 6f8459e..f2595da 100644
--- a/src/main/java/KryoInstanceFactory.kt
+++ b/src/main/java/KryoInstanceFactory.kt
@@ -47,13 +47,3 @@ fun main() {
         restored.get(InstanceContext(koin, Scope(StringQualifier("foo"), ScopeID(), false, koin), ParametersHolder()))
     println("result is ${result}")
 }
-
-
-private fun buildKryo(): Kryo {
-    val kryo = Kryo()
-
-    kryo.setReferences(true)
-    kryo.isRegistrationRequired = false
-
-    return kryo
-}
\ No newline at end of file
diff --git a/src/main/java/KryoKoin.kt b/src/main/java/KryoKoin.kt
new file mode 100644
index 0000000..850ba1d
--- /dev/null
+++ b/src/main/java/KryoKoin.kt
@@ -0,0 +1,37 @@
+import com.esotericsoftware.kryo.io.Input
+import com.esotericsoftware.kryo.io.Output
+import org.koin.core.Koin
+import org.koin.core.context.GlobalContext
+import org.koin.dsl.module
+import java.awt.Dimension
+import java.io.File
+import java.io.FileInputStream
+import java.io.FileOutputStream
+
+fun main() {
+    val saveFile = File("file.bin")
+    val kryo = buildKryo()
+
+    val koin = GlobalContext.startKoin {}.koin
+
+    koin. loadModules(listOf(
+        module(createdAtStart = true) {
+            single { Dimension(23,3) }
+        }
+    ))
+
+    val output = Output(FileOutputStream(saveFile))
+    kryo.writeClassAndObject(output, koin)
+    output.close()
+
+    // the downstream bits here do not matter, because it fails already while saving
+
+    println("restoring...")
+    val input = Input(FileInputStream(saveFile));
+    val restored = kryo.readClassAndObject(input) as Koin
+
+    val result = restored.get<Dimension>()
+    println("result is ${result}")
+}
+
+
diff --git a/src/main/java/KryoLambda.kt b/src/main/java/KryoLambda.kt
index c440d62..28186f3 100644
--- a/src/main/java/KryoLambda.kt
+++ b/src/main/java/KryoLambda.kt
@@ -12,7 +12,7 @@ typealias Builder<T> = String.(Int) -> T
 
 fun main() {
     val saveFile = File("file.bin")
-    val kryo = buildKryo()
+    val kryo = buildLambdaKryo()
 
     val smthg: Builder<Dimension> = { it ->
         println(this)
@@ -33,7 +33,7 @@ fun main() {
 }
 
 
-private fun buildKryo(): Kryo {
+private fun buildLambdaKryo(): Kryo {
     val kryo = Kryo()
 
     kryo.setReferences(true)