diff --git a/CUE4Parse b/CUE4Parse
index d35be31e..c55583b9 160000
--- a/CUE4Parse
+++ b/CUE4Parse
@@ -1 +1 @@
-Subproject commit d35be31eaaf7e327dfb43132584624af9c29c13e
+Subproject commit c55583b9295179c719a58b465d5dd6e493021f0b
diff --git a/FModel/ViewModels/ApplicationViewModel.cs b/FModel/ViewModels/ApplicationViewModel.cs
index dd0806c2..93ed5d7e 100644
--- a/FModel/ViewModels/ApplicationViewModel.cs
+++ b/FModel/ViewModels/ApplicationViewModel.cs
@@ -236,12 +236,18 @@ public class ApplicationViewModel : ViewModel
 
     public static async ValueTask InitOodle()
     {
-        var oodlePath = Path.Combine(UserSettings.Default.OutputDirectory, ".data", OodleHelper.OODLE_DLL_NAME);
-        if (File.Exists(OodleHelper.OODLE_DLL_NAME))
+        if (File.Exists(OodleHelper.OODLE_DLL_NAME_OLD))
         {
-            File.Move(OodleHelper.OODLE_DLL_NAME, oodlePath, true);
+            try
+            {
+                File.Delete(OodleHelper.OODLE_DLL_NAME_OLD);
+            }
+            catch { /* ignored */}
         }
-        else if (!File.Exists(oodlePath))
+
+        var oodlePath = Path.Combine(UserSettings.Default.OutputDirectory, ".data", OodleHelper.OODLE_DLL_NAME);
+
+        if (!File.Exists(oodlePath))
         {
             await OodleHelper.DownloadOodleDllAsync(oodlePath);
         }
@@ -252,7 +258,9 @@ public class ApplicationViewModel : ViewModel
     public static async ValueTask InitZlib()
     {
         var zlibPath = Path.Combine(UserSettings.Default.OutputDirectory, ".data", ZlibHelper.DLL_NAME);
-        if (!File.Exists(zlibPath))
+        var zlibFileInfo = new FileInfo(zlibPath);
+
+        if (!zlibFileInfo.Exists || zlibFileInfo.LastWriteTimeUtc < DateTime.UtcNow.AddMonths(-4))
         {
             await ZlibHelper.DownloadDllAsync(zlibPath);
         }