diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6cf1739..bdb6e90 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 ## v2.x
 
+### v2.2.0
+
+Released on 2021-05-15
+
+- Update included wimlib to 1.13.4.
+- Fix `UpdateProgress` and `VerifyStreamsProgress` marshalling issue (#2).
+
 ### v2.1.0
 
 Released on 2021-04-10
diff --git a/ManagedWimLib.Tests/UpdateTests.cs b/ManagedWimLib.Tests/UpdateTests.cs
index 4227610..543efa9 100644
--- a/ManagedWimLib.Tests/UpdateTests.cs
+++ b/ManagedWimLib.Tests/UpdateTests.cs
@@ -74,6 +74,7 @@ public static CallbackStatus UpdateProgressCallback(ProgressMsg msg, object info
                         tested.Set();
 
                         UpdateCommand cmd = m.Command;
+                        Console.WriteLine($"Commands = {m.CompletedCommands}/{m.TotalCommands}");
                         switch (cmd.Op)
                         {
                             case UpdateOp.Add:
diff --git a/ManagedWimLib.Tests/VerifyTests.cs b/ManagedWimLib.Tests/VerifyTests.cs
index c66d75d..67a913e 100644
--- a/ManagedWimLib.Tests/VerifyTests.cs
+++ b/ManagedWimLib.Tests/VerifyTests.cs
@@ -22,6 +22,7 @@ You should have received a copy of the GNU Lesser General Public License
 */
 
 using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
 using System.IO;
 using System.Linq;
 
@@ -49,12 +50,13 @@ public void VerifyTemplate(string wimFileName, bool result)
                 _checked[i] = false;
             CallbackStatus ProgressCallback(ProgressMsg msg, object info, object progctx)
             {
+                Console.WriteLine($"Callback msg={msg}");
                 switch (msg)
                 {
                     case ProgressMsg.BeginVerifyImage:
                         {
                             VerifyImageProgress m = (VerifyImageProgress)info;
-                            Assert.IsNotNull(info);
+                            Assert.IsNotNull(m);
 
                             _checked[0] = true;
                         }
@@ -62,7 +64,7 @@ CallbackStatus ProgressCallback(ProgressMsg msg, object info, object progctx)
                     case ProgressMsg.EndVerifyImage:
                         {
                             VerifyImageProgress m = (VerifyImageProgress)info;
-                            Assert.IsNotNull(info);
+                            Assert.IsNotNull(m);
 
                             _checked[1] = true;
                         }
@@ -70,7 +72,8 @@ CallbackStatus ProgressCallback(ProgressMsg msg, object info, object progctx)
                     case ProgressMsg.VerifyStreams:
                         {
                             VerifyStreamsProgress m = (VerifyStreamsProgress)info;
-                            Assert.IsNotNull(info);
+                            Assert.IsNotNull(m);
+                            Console.WriteLine($"Bytes={m.CurrentBytes}/{m.TotalBytes}, {m.CurrentStreams}/{m.TotalStreams}");
 
                             _checked[2] = true;
                         }
diff --git a/ManagedWimLib/ManagedWimLib.csproj b/ManagedWimLib/ManagedWimLib.csproj
index 52ff6c8..d87e993 100644
--- a/ManagedWimLib/ManagedWimLib.csproj
+++ b/ManagedWimLib/ManagedWimLib.csproj
@@ -6,7 +6,7 @@
     <Title>ManagedWimLib</Title>
     <LangVersion>latest</LangVersion>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <Version>2.1.0</Version>
+    <Version>2.2.0</Version>
     <Authors>Eric Biggers, Hajin Jang</Authors>
     <Company>Joveler</Company>
     <Description>Native wimlib wrapper library for .NET.
@@ -17,8 +17,8 @@ Supports Windows, Linux and macOS.</Description>
     <PackageProjectUrl>https://github.com/ied206/ManagedWimLib</PackageProjectUrl>
     <PackageIcon>images\Logo.png</PackageIcon>
     <RepositoryUrl>https://github.com/ied206/ManagedWimLib</RepositoryUrl>
-    <PackageReleaseNotes>- Update inlcuded wimlib to 1.13.3.
-- Official support for Windows ARM64.</PackageReleaseNotes>
+    <PackageReleaseNotes>- Update included wimlib to 1.13.4.
+- Fix UpdateProgress and VerifyStreamsProgress marshalling issue.</PackageReleaseNotes>
     <PackageTags>wim wimlib dism imagex archive native pinvoke interop</PackageTags>
   </PropertyGroup>
   <!-- PackageReference -->
diff --git a/ManagedWimLib/NativeStructs.cs b/ManagedWimLib/NativeStructs.cs
index e648c33..3ccd36d 100644
--- a/ManagedWimLib/NativeStructs.cs
+++ b/ManagedWimLib/NativeStructs.cs
@@ -184,6 +184,7 @@ public enum ProgressMsg
         /// info param will point to <see cref="WriteStreamsProgress"/>.
         /// This message may be received many times while the WIM file is being written or appended
         /// to with <see cref="Wim.Write()"/>, <see cref="Wim.Overwrite()"/>.
+        /// Since wimlib v1.13.4 it will also be received when a split WIM part is being written by <see cref="Wim.Split(string, ulong, WriteFlags)"/>.
         /// </summary>
         WriteStreams = 12,
         /// <summary>
@@ -783,6 +784,11 @@ public enum ExtractFlags : uint
         /// </summary>
         Ntfs = 0x00000001,
         /// <summary>
+        /// Since wimlib v1.13.4: Don't consider corrupted files to be an error.
+        /// Just extract them in whatever form we can.
+        /// </summary>
+        RecoverData = 0x00000002,
+        /// <summary>
         /// UNIX-like systems only:
         /// Extract UNIX-specific metadata captured with <see cref="AddFlags.UnixData"/>.
         /// </summary>
@@ -1765,6 +1771,7 @@ public RenameCommand(string wimSourcePath, string wimTargetPath)
     #region struct UpdateCommand32
     /// <summary>
     /// 32bit version of real UpdateCommand struct which is passed to the native wimlib.
+    /// Must be struct (using class crashes the process)
     /// </summary>
     /// <remarks>
     /// Original C struct (wimlib_update_command) contains a union with three structs: Add, Delete and Rename.
@@ -1913,6 +1920,7 @@ public UpdateCommand ToManagedClass()
     #region struct UpdateCommand64
     /// <summary>
     /// 64bit version of real UpdateCommand struct which is passed to the native wimlib.
+    /// Must be struct (using class crashes the process)
     /// </summary>
     /// <remarks>
     /// Original C struct (wimlib_update_command) contains a union with three structs: Add, Delete and Rename.
diff --git a/ManagedWimLib/ProgressCallback.cs b/ManagedWimLib/ProgressCallback.cs
index 978d30b..10983f7 100644
--- a/ManagedWimLib/ProgressCallback.cs
+++ b/ManagedWimLib/ProgressCallback.cs
@@ -157,6 +157,7 @@ public class WriteStreamsProgress
         /// The number of bytes of file data that have been written so far. 
         /// This starts at 0 and ends at TotalBytes.
         /// This number is the uncompressed size; the actual size may be lower due to compression.
+        /// See <see cref="CompletedCompressedBytes"/> for the compressed size.
         /// </summary>
         public ulong CompletedBytes;
         /// <summary>
@@ -181,6 +182,10 @@ public class WriteStreamsProgress
         /// This is currently broken and will always be 0. 
         /// </summary>
         public uint CompletedParts;
+        /// <summary>
+        /// Since wimlib v1.13.4: Like <see cref="CompletedBytes"/>, but counts the compressed size.
+        /// </summary>
+        public ulong CompletedCompressedBytes;
     }
     #endregion
 
@@ -406,11 +411,13 @@ public class UpdateProgress
         /// <summary>
         /// Number of update commands that have been completed so far.
         /// </summary>
-        public uint CompletedCommands;
+        public ulong CompletedCommands => CompletedCommandsVal.ToUInt64();
+        internal UIntPtr CompletedCommandsVal;
         /// <summary>
         /// Number of update commands that are being executed as part of this call to Wim.UpdateImage().
         /// </summary>
-        public uint TotalCommands;
+        public ulong TotalCommands => TotalCommandsVal.ToUInt64();
+        internal UIntPtr TotalCommandsVal;
     }
 
     /// <summary>
@@ -441,20 +448,19 @@ public UpdateCommand Command
         /// <summary>
         /// Number of update commands that have been completed so far.
         /// </summary>
-        public uint CompletedCommands;
+        public UIntPtr CompletedCommandsVal;
         /// <summary>
         /// Number of update commands that are being executed as part of this call to Wim.UpdateImage().
         /// </summary>
-        public uint TotalCommands;
+        public UIntPtr TotalCommandsVal;
 
-        [SuppressMessage("ReSharper", "ArrangeThisQualifier")]
         public UpdateProgress ToManaged()
         {
             return new UpdateProgress
             {
                 Command = this.Command,
-                CompletedCommands = this.CompletedCommands,
-                TotalCommands = this.TotalCommands,
+                CompletedCommandsVal = this.CompletedCommandsVal,
+                TotalCommandsVal = this.TotalCommandsVal,
             };
         }
     }
@@ -647,10 +653,10 @@ public class VerifyStreamsProgress
     {
         public string WimFile => Wim.Lib.PtrToStringAuto(_wimFilePtr);
         private IntPtr _wimFilePtr;
-        public uint TotalStreams;
-        public uint TotalBytes;
-        public uint CurrentStreams;
-        public uint CurrentBytes;
+        public ulong TotalStreams;
+        public ulong TotalBytes;
+        public ulong CurrentStreams;
+        public ulong CurrentBytes;
     }
     #endregion
 
diff --git a/ManagedWimLib/runtimes/linux-arm/native/libwim.so b/ManagedWimLib/runtimes/linux-arm/native/libwim.so
index 7b271d5..64a80c8 100644
Binary files a/ManagedWimLib/runtimes/linux-arm/native/libwim.so and b/ManagedWimLib/runtimes/linux-arm/native/libwim.so differ
diff --git a/ManagedWimLib/runtimes/linux-arm64/native/libwim.so b/ManagedWimLib/runtimes/linux-arm64/native/libwim.so
index 545301f..c9cf3d0 100644
Binary files a/ManagedWimLib/runtimes/linux-arm64/native/libwim.so and b/ManagedWimLib/runtimes/linux-arm64/native/libwim.so differ
diff --git a/ManagedWimLib/runtimes/osx-x64/libwim.dylib b/ManagedWimLib/runtimes/osx-x64/libwim.dylib
index 351f3bc..12cb1c7 100755
Binary files a/ManagedWimLib/runtimes/osx-x64/libwim.dylib and b/ManagedWimLib/runtimes/osx-x64/libwim.dylib differ
diff --git a/ManagedWimLib/runtimes/win-arm64/native/libwim-15.dll b/ManagedWimLib/runtimes/win-arm64/native/libwim-15.dll
index 249293e..655f2d2 100644
Binary files a/ManagedWimLib/runtimes/win-arm64/native/libwim-15.dll and b/ManagedWimLib/runtimes/win-arm64/native/libwim-15.dll differ
diff --git a/ManagedWimLib/runtimes/win-arm64/native/libwinpthread-1.dll b/ManagedWimLib/runtimes/win-arm64/native/libwinpthread-1.dll
index 1dfc0cf..0880dbd 100644
Binary files a/ManagedWimLib/runtimes/win-arm64/native/libwinpthread-1.dll and b/ManagedWimLib/runtimes/win-arm64/native/libwinpthread-1.dll differ
diff --git a/ManagedWimLib/runtimes/win-arm64/native/libxml2-2.dll b/ManagedWimLib/runtimes/win-arm64/native/libxml2-2.dll
index dac6e8a..5a0033b 100644
Binary files a/ManagedWimLib/runtimes/win-arm64/native/libxml2-2.dll and b/ManagedWimLib/runtimes/win-arm64/native/libxml2-2.dll differ
diff --git a/ManagedWimLib/runtimes/win-x64/native/libwim-15.dll b/ManagedWimLib/runtimes/win-x64/native/libwim-15.dll
index 1fa4aed..8a17acb 100644
Binary files a/ManagedWimLib/runtimes/win-x64/native/libwim-15.dll and b/ManagedWimLib/runtimes/win-x64/native/libwim-15.dll differ
diff --git a/ManagedWimLib/runtimes/win-x86/native/libwim-15.dll b/ManagedWimLib/runtimes/win-x86/native/libwim-15.dll
index 42f848a..c4d35a5 100644
Binary files a/ManagedWimLib/runtimes/win-x86/native/libwim-15.dll and b/ManagedWimLib/runtimes/win-x86/native/libwim-15.dll differ
diff --git a/README.md b/README.md
index ed8f7e8..8753539 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ macOS arm64 should be supported on theory, but I do not have access to an Apple
 
 ### Supported wimlib version
 
-- 1.13.3 (Included)
+- 1.13.4 (Included)
 
 ## Usage
 
diff --git a/USAGE.md b/USAGE.md
index d94a79a..b14bdca 100644
--- a/USAGE.md
+++ b/USAGE.md
@@ -32,7 +32,7 @@ public static void InitNativeLibrary()
     if (!File.Exists(libPath))
         throw new PlatformNotSupportedException($"Unable to find native library [{libPath}].");
 
-    Magic.GlobalInit(libPath);
+    Wim.GlobalInit(libPath, InitFlags.None);
 }
 ```
 
@@ -79,15 +79,17 @@ public static void InitNativeLibrary()
     if (!File.Exists(libPath))
         throw new PlatformNotSupportedException($"Unable to find native library [{libPath}].");
 
-    Magic.GlobalInit(libPath);
+    Wim.GlobalInit(libPath, InitFlags.None);
 }
 ```
 
+To configure behaviors of wimlib, pass `InitFlags` to `Wim.GlobalInit()`.
+
 **WARNING**: Caller process and callee library must have the same architecture!
 
 ### Embedded binary
 
-ManagedWimLib comes with sets of binaries of `wimlib 1.13.3`. They will be copied into the build directory at build time.
+ManagedWimLib comes with sets of binaries of `wimlib 1.13.4`. They will be copied into the build directory at build time.
 
 #### For .NET Framework 4.5.1+
 
@@ -112,7 +114,7 @@ ManagedWimLib comes with sets of binaries of `wimlib 1.13.3`. They will be copie
 
 - Linux binaries are not portable. Included binaires may not work on your distribution.
     - On Linux, wimlib depends on system-installed `libfuse`.
-- If you call `Wim.GlobalInit()` without `libPath` parameter on Linux or macOS, `ManagedWimLib` will search for system-installed wimlib.    
+- If you call `Wim.GlobalInit()` without `libPath` parameter on Linux or macOS, `ManagedWimLib` will search for system-installed wimlib.
 - POSIX binaries were compiled without NTFS-3G support to make them as LGPLv3-licensed.
     - If you want NTFS-3G functionality, load the system-installed library and make sure your program is compatible with **GPLv3**.
 
diff --git a/native/windows/patch/wimlib-1.13.3-clang-header.patch b/native/windows/patch/wimlib-clang-header.patch
similarity index 100%
rename from native/windows/patch/wimlib-1.13.3-clang-header.patch
rename to native/windows/patch/wimlib-clang-header.patch