diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index c756859..7db350d 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -176,7 +176,7 @@ jobs:
       id: cache_key
       run: |
         cd scripts
-        python get_cache_key.py --prefix=win zlib pkgconf exiv2 openssl || exit 1
+        python get_cache_key.py --prefix=win zlib pkgconf expat exiv2 openssl || exit 1
     - name: Cache
       id: cache
       uses: actions/cache@v2
@@ -213,6 +213,11 @@ jobs:
       run: |
         COPY /Y scripts\build_win_pkgconf.bat || exit 1
         CALL build_win_pkgconf.bat || exit 1
+    - name: Build expat
+      if: steps.cache.outputs.cache-hit != 'true'
+      run: |
+        COPY /Y scripts\build_win_expat.bat || exit 1
+        CALL build_win_expat.bat || exit 1
     - name: Build exiv2
       if: steps.cache.outputs.cache-hit != 'true'
       run: |
diff --git a/patch/zlib-msvc/zconf.h.patch b/patch/zlib-msvc/zconf.h.patch
index f4ad002..0f03549 100644
--- a/patch/zlib-msvc/zconf.h.patch
+++ b/patch/zlib-msvc/zconf.h.patch
@@ -1,9 +1,9 @@
---- zconf.h.orig	2022-04-26 09:20:44 +0000
-+++ zconf.h	2022-04-26 09:23:39 +0000
-@@ -474,7 +474,7 @@
+--- zconf.h.orig	2022-10-20 11:06:04 +0000
++++ zconf.h	2022-10-20 11:06:56 +0000
+@@ -487,7 +487,7 @@
  #endif
  #ifndef Z_SOLO
- #  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+ #  if defined(Z_HAVE_UNISTD_H)
 -#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
 +//#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
  #    ifdef VMS
diff --git a/scripts/build_win_expat.bat b/scripts/build_win_expat.bat
new file mode 100644
index 0000000..7adb104
--- /dev/null
+++ b/scripts/build_win_expat.bat
@@ -0,0 +1,23 @@
+@ECHO OFF
+SETLOCAL
+SET PREFIX=%CD%\clib
+SET PKG_CONFIG_DIR=%PREFIX%\lib\pkgconfig
+IF NOT EXIST cbuild (
+    MD cbuild || EXIT /B 1
+)
+CD cbuild || EXIT /B 1
+git clone --depth 1 "https://github.com/libexpat/libexpat" || EXIT /B %ERRORLEVEL%
+CD libexpat && CD expat || EXIT /B %ERRORLEVEL%
+IF NOT EXIST build (
+    MD build || EXIT /B 1
+)
+CD build || EXIT /B 1
+cmake ^
+    -G Ninja ^
+    -DCMAKE_PREFIX_PATH=%PREFIX% ^
+    -DCMAKE_BUILD_TYPE=Release ^
+    -DCMAKE_INSTALL_PREFIX=%PREFIX% ^
+    -DINSTALL_PKGCONFIG_DIR=%PKG_CONFIG_DIR% ^
+    ../ || EXIT /B %ERRORLEVEL%
+ninja && ninja install || ninja && ninja install || EXIT /B %ERRORLEVEL%
+ENDLOCAL
diff --git a/scripts/build_win_openssl.bat b/scripts/build_win_openssl.bat
index 0172e1e..7a6bd9b 100644
--- a/scripts/build_win_openssl.bat
+++ b/scripts/build_win_openssl.bat
@@ -14,6 +14,9 @@ CALL %DOWNLOAD_RESOURCE% -o "openssl-3.0.5.tar.gz" "https://www.openssl.org/sour
 tar -xzvf "openssl-3.0.5.tar.gz" || EXIT /B %ERRORLEVEL%
 CD openssl-3.0.5 || EXIT /B 1
 perl Configure shared zlib-dynamic --prefix=%PREFIX% --openssldir=%OPENSSLDIR% || EXIT /B %ERRORLEVEL%
+SET "PATH=%PREFIX%\bin;%PATH%"
+SET "INCLUDE=%PREFIX%\include;%INCLUDE%"
+SET "LIB=%PREFIX%\lib;%LIB%"
 nmake || EXIT /B %ERRORLEVEL%
 nmake install || EXIT /B %ERRORLEVEL%
 ENDLOCAL
diff --git a/scripts/get_cache_key.py b/scripts/get_cache_key.py
index 3226592..279a705 100644
--- a/scripts/get_cache_key.py
+++ b/scripts/get_cache_key.py
@@ -6,7 +6,7 @@ from time import gmtime, time, strftime
 from typing import List
 
 
-ALL_FEATURES = ['exiv2', 'ffmpeg', 'libzip', 'openssl', 'pkgconf', 'x264', 'zlib']
+ALL_FEATURES = ['exiv2', 'expat', 'ffmpeg', 'libzip', 'openssl', 'pkgconf', 'x264', 'zlib']
 
 def sha256(data) -> str:
     if isinstance(data, str):