diff --git a/build.gradle b/build.gradle
index 3db3f0c..bfe8ebd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 group 'kweb'
-version '0.4.0'
+version '0.4.1'
 
 buildscript {
     ext.kotlin_version = '1.4.0'
diff --git a/src/main/kotlin/kweb/shoebox/stores/MapDBStore.kt b/src/main/kotlin/kweb/shoebox/stores/MapDBStore.kt
index f9365cf..e18983d 100644
--- a/src/main/kotlin/kweb/shoebox/stores/MapDBStore.kt
+++ b/src/main/kotlin/kweb/shoebox/stores/MapDBStore.kt
@@ -13,7 +13,7 @@ import org.mapdb.Serializer
  * Created by ian on 3/22/17.
  */
 @ExperimentalSerializationApi
-class MapDBStore<T : Any>(val db: DB, val name: String, val serializer: KSerializer<T>) : Store<T> {
+class MapDBStore<T : Any>(private val db: DB, private val name: String, private val serializer: KSerializer<T>) : Store<T> {
     private val map: HTreeMap<String, ByteArray> = db
             .hashMap(name, Serializer.STRING, Serializer.BYTE_ARRAY)
             .createOrOpen()