diff --git a/nimPNG.nim b/nimPNG.nim
index 5821bb8..ac3041b 100644
--- a/nimPNG.nim
+++ b/nimPNG.nim
@@ -26,10 +26,10 @@
 #-------------------------------------
 
 import streams, endians, tables, hashes, math
-import private/buffer, private/nimz
+import nimPNG/[buffer, nimz]
 
 const
-  NIM_PNG_VERSION = "0.2.1"
+  NIM_PNG_VERSION = "0.2.4"
 
 type
   PNGChunkType = distinct int32
diff --git a/nimPNG.nimble b/nimPNG.nimble
index c0b352a..842dd71 100644
--- a/nimPNG.nimble
+++ b/nimPNG.nimble
@@ -1,11 +1,12 @@
 # Package
-version       = "0.2.3"
+version       = "0.2.4"
 author        = "Andri Lim"
 description   = "PNG encoder and decoder"
 license       = "MIT"
+skipDirs      = @["apng", "suite", "tester"]
 
 # Deps
-requires "nim >= 0.11.2"
+requires "nim >= 0.19.0"
 
 task tests, "Run tests":
     withDir("tester"):
diff --git a/private/buffer.nim b/nimPNG/buffer.nim
similarity index 100%
rename from private/buffer.nim
rename to nimPNG/buffer.nim
diff --git a/private/nimz.nim b/nimPNG/nimz.nim
similarity index 100%
rename from private/nimz.nim
rename to nimPNG/nimz.nim
diff --git a/tester/testCodec.nim b/tester/testCodec.nim
index 9088605..b08fa45 100644
--- a/tester/testCodec.nim
+++ b/tester/testCodec.nim
@@ -1,5 +1,5 @@
 import nimPNG, streams, math, strutils, tables, base64, os
-import private.buffer
+import nimPNG/buffer
 
 type
   Image = ref object