diff --git a/gradle.properties b/gradle.properties
index a1d02e9..8456091 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -18,7 +18,7 @@ lib_spotbugs_v = 4.8.4
 lib_scalamodule_xml_v = 2.2.0
 
 lib_messiva_v = 0.2.0
-lib_resourcetools_v = 0.2.2
+lib_resourcetools_v = 0.3.1
 lib_slf4j_v = 2.0.13
 
 lib_javatelegramapi_v = 6.9.1
diff --git a/src/main/scala/cc/sukazyo/cono/morny/MornyAbout.scala b/src/main/scala/cc/sukazyo/cono/morny/MornyAbout.scala
index d9edc60..25eda6e 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/MornyAbout.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/MornyAbout.scala
@@ -5,7 +5,7 @@ import java.io.IOException
 object MornyAbout {
 	
 	val MORNY_PREVIEW_IMAGE_ASCII: String =
-		try { MornyAssets.pack getResource "texts/server-hello.txt" readAsString }
+		try { MornyAssets.pack getFile "texts/server-hello.txt" readString }
 		catch case e: IOException =>
 			throw RuntimeException("Cannot read MORNY_PREVIEW_IMAGE_ASCII from assets pack", e)
 	
diff --git a/src/main/scala/cc/sukazyo/cono/morny/MornyAssets.scala b/src/main/scala/cc/sukazyo/cono/morny/MornyAssets.scala
index c331ea9..1a0727f 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/MornyAssets.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/MornyAssets.scala
@@ -1,11 +1,11 @@
 package cc.sukazyo.cono.morny
 
-import cc.sukazyo.restools.ResourcesPackage
+import cc.sukazyo.restools.{ResourceDirectory, ResourcePackage}
 
 object MornyAssets {
 	
 	class AssetsException (caused: Throwable) extends Exception("Cannot read assets file.", caused)
 	
-	val pack: ResourcesPackage = ResourcesPackage(MornyAssets.getClass, "assets_morny")
+	val pack: ResourceDirectory = ResourcePackage.get("assets_morny").getDirectory("assets_morny")
 	
 }
diff --git a/src/main/scala/cc/sukazyo/cono/morny/data/TelegramImages.scala b/src/main/scala/cc/sukazyo/cono/morny/data/TelegramImages.scala
index ac45039..cf3dd04 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/data/TelegramImages.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/data/TelegramImages.scala
@@ -22,7 +22,7 @@ object TelegramImages {
 		
 		@throws[AssetsException]
 		private def read (): Unit = {
-			Using ((MornyAssets.pack getResource assetsPath)read) { stream =>
+			Using (MornyAssets.pack getFile assetsPath read) { stream =>
 				try { this.cache = Some(stream.readAllBytes()) }
 				catch case e: IOException => {
 					throw AssetsException(e)
diff --git a/src/test/scala/cc/sukazyo/cono/morny/test/MornyTests.scala b/src/test/scala/cc/sukazyo/cono/morny/test/MornyTests.scala
index dd1fc9f..623b616 100644
--- a/src/test/scala/cc/sukazyo/cono/morny/test/MornyTests.scala
+++ b/src/test/scala/cc/sukazyo/cono/morny/test/MornyTests.scala
@@ -1,13 +1,13 @@
 package cc.sukazyo.cono.morny.test
 
-import cc.sukazyo.restools.ResourcesPackage
+import cc.sukazyo.restools.{ResourceDirectory, ResourcePackage}
 import org.scalatest.freespec.AnyFreeSpec
 import org.scalatest.matchers.should
 
 abstract class MornyTests extends AnyFreeSpec with should.Matchers {
 	
-	val assets: ResourcesPackage =
-		ResourcesPackage(classOf[MornyTests], "assets_morny_tests")
+	val assets: ResourceDirectory =
+		ResourcePackage.get("assets_morny_tests").getDirectory("assets_morny_tests")
 	
 	val pending_val = "[not-implemented]"
 	
diff --git a/src/test/scala/cc/sukazyo/cono/morny/test/utils/CommonEncryptTest.scala b/src/test/scala/cc/sukazyo/cono/morny/test/utils/CommonEncryptTest.scala
index 06f5c38..c4f6139 100644
--- a/src/test/scala/cc/sukazyo/cono/morny/test/utils/CommonEncryptTest.scala
+++ b/src/test/scala/cc/sukazyo/cono/morny/test/utils/CommonEncryptTest.scala
@@ -83,7 +83,7 @@ class CommonEncryptTest extends MornyTests with TableDrivenPropertyChecks {
 				if file == null then
 					Array.empty[Byte]
 				else
-					assets.getResource(file).read.readAllBytes
+					assets.getFile(file).read.readAllBytes
 			
 			s"while hashing binary $_name :" - {