diff --git a/ArcFormats/AIRNovel/ArcAIR.cs b/ArcFormats/AIRNovel/ArcAIR.cs
index addbe36c..980783fd 100644
--- a/ArcFormats/AIRNovel/ArcAIR.cs
+++ b/ArcFormats/AIRNovel/ArcAIR.cs
@@ -89,8 +89,8 @@ namespace GameRes.Formats.AirNovel
             SharpZip.ZipFile zip = null;
             try
             {
-                SharpZip.ZipStrings.CodePage = Encoding.UTF8.CodePage;
-                zip = new SharpZip.ZipFile (input);
+                var sc = SharpZip.StringCodec.FromCodePage (Encoding.UTF8.CodePage);
+                zip = new SharpZip.ZipFile (input, false, sc);
                 var files = zip.Cast<SharpZip.ZipEntry>().Where (z => !z.IsDirectory);
                 bool has_encrypted = false;
                 var dir = new List<Entry>();
diff --git a/ArcFormats/PkWare/ArcZIP.cs b/ArcFormats/PkWare/ArcZIP.cs
index 86c72c20..9d254de1 100644
--- a/ArcFormats/PkWare/ArcZIP.cs
+++ b/ArcFormats/PkWare/ArcZIP.cs
@@ -126,8 +126,8 @@ namespace GameRes.Formats.PkWare
 
         internal ArcFile OpenZipArchive (ArcView file, Stream input)
         {
-            SharpZip.ZipStrings.CodePage = Properties.Settings.Default.ZIPEncodingCP;
-            var zip = new SharpZip.ZipFile (input);
+            var sc = SharpZip.StringCodec.FromCodePage (Properties.Settings.Default.ZIPEncodingCP);
+            var zip = new SharpZip.ZipFile (input, false, sc);
             try
             {
                 var files = zip.Cast<SharpZip.ZipEntry>().Where (z => !z.IsDirectory);
diff --git a/ArcFormats/VnMaker/ArcZIP.cs b/ArcFormats/VnMaker/ArcZIP.cs
index e8ac81f5..4b13bf3b 100644
--- a/ArcFormats/VnMaker/ArcZIP.cs
+++ b/ArcFormats/VnMaker/ArcZIP.cs
@@ -102,8 +102,8 @@ namespace GameRes.Formats.VnMaker
 
         internal ArcFile OpenZipArchive (ArcView file, Stream input)
         {
-            SharpZip.ZipStrings.CodePage = Properties.Settings.Default.ZIPEncodingCP;
-            var zip = new SharpZip.ZipFile (input);
+            var sc = SharpZip.StringCodec.FromCodePage (Properties.Settings.Default.ZIPEncodingCP);
+            var zip = new SharpZip.ZipFile (input, false, sc);
             try
             {
                 var files = zip.Cast<SharpZip.ZipEntry>().Where (z => !z.IsDirectory);