diff --git a/README.rst b/README.rst
index eed1b84f..79fae51a 100644
--- a/README.rst
+++ b/README.rst
@@ -26,7 +26,7 @@ Currently FFmpeg 8.1 is built with the following packages enabled for all platfo
 - openh264 2.6.0
 - opencore-amr 0.1.6
 - x264 32c3b801191522961102d4bea292cdb61068d0dd
-- x265 4.1
+- x265 4.2
 
 The following additional packages are also enabled on Linux:
 
diff --git a/patches/vorbis.patch b/patches/vorbis.patch
deleted file mode 100644
index 0670c46a..00000000
--- a/patches/vorbis.patch
+++ /dev/null
@@ -1,16 +0,0 @@
-diff -urN libvorbis-1.3.7.orig/configure libvorbis-1.3.7/configure
---- libvorbis-1.3.7.orig/configure	2020-07-04 08:20:13.000000000 +0200
-+++ libvorbis-1.3.7/configure	2024-05-21 08:24:01.069006435 +0200
-@@ -12840,9 +12840,9 @@
- 		CFLAGS="-O3 -Wall -Wextra -ffast-math -D__NO_MATH_INLINES -fsigned-char $sparc_cpu"
- 		PROFILE="-pg -g -O3 -D__NO_MATH_INLINES -fsigned-char $sparc_cpu" ;;
- 	*-*-darwin*)
--		DEBUG="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O0 -fsigned-char"
--		CFLAGS="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O3 -ffast-math -fsigned-char"
--		PROFILE="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -pg -O3 -ffast-math -fsigned-char";;
-+		DEBUG="-DDARWIN -fno-common -Wall -g -O0 -fsigned-char"
-+		CFLAGS="-DDARWIN -fno-common -Wall -g -O3 -ffast-math -fsigned-char"
-+		PROFILE="-DDARWIN -fno-common -Wall -g -pg -O3 -ffast-math -fsigned-char";;
- 	*-*-os2*)
- 		# Use -W instead of -Wextra because gcc on OS/2 is an old version.
- 		DEBUG="-g -Wall -W -D_REENTRANT -D__NO_MATH_INLINES -fsigned-char"
diff --git a/patches/x265.patch b/patches/x265.patch
deleted file mode 100644
index f2f4b49c..00000000
--- a/patches/x265.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
-index 95218f5dc..488fd0d7d 100755
---- a/source/CMakeLists.txt
-+++ b/source/CMakeLists.txt
-@@ -6,18 +6,12 @@ if(NOT CMAKE_BUILD_TYPE)
-         FORCE)
- endif()
- message(STATUS "cmake version ${CMAKE_VERSION}")
--if(POLICY CMP0025)
--    cmake_policy(SET CMP0025 OLD) # report Apple's Clang as just Clang
--endif()
- if(POLICY CMP0042)
-     cmake_policy(SET CMP0042 NEW) # MACOSX_RPATH
- endif()
--if(POLICY CMP0054)
--    cmake_policy(SET CMP0054 OLD) # Only interpret if() arguments as variables or keywords when unquoted
--endif()
- 
- project (x265)
--cmake_minimum_required (VERSION 2.8.8) # OBJECT libraries require 2.8.8
-+cmake_minimum_required (VERSION 4.2.1) # OBJECT libraries require 2.8.8
- include(CheckIncludeFiles)
- include(CheckFunctionExists)
- include(CheckSymbolExists)
-@@ -141,6 +135,9 @@ endif()
- if(${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
-     set(CLANG 1)
- endif()
-+if(${CMAKE_CXX_COMPILER_ID} STREQUAL "AppleClang")
-+    set(CLANG 1)
-+endif()
- if(${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel")
-     set(INTEL_CXX 1)
- endif()
diff --git a/scripts/build-ffmpeg.py b/scripts/build-ffmpeg.py
index 61616c40..2393ebf8 100644
--- a/scripts/build-ffmpeg.py
+++ b/scripts/build-ffmpeg.py
@@ -1,12 +1,14 @@
 import argparse
 import concurrent.futures
 import glob
+import gzip
 import hashlib
 import os
 import platform
 import shutil
 import subprocess
 import sys
+import tarfile
 
 from cibuildpkg import Builder, Package, fetch, log_group, run
 
@@ -148,8 +150,8 @@ def calculate_sha256(filename: str) -> str:
     ),
     Package(
         name="x265",
-        source_url="https://bitbucket.org/multicoreware/x265_git/downloads/x265_4.1.tar.gz",
-        sha256="a31699c6a89806b74b0151e5e6a7df65de4b49050482fe5ebf8a4379d7af8f29",
+        source_url="https://bitbucket.org/multicoreware/x265_git/downloads/x265_4.2.tar.gz",
+        sha256="40b1ea0453e0309f0eba934e0ddf533f8f6295966679e8894e8f1c1c8d5e1210",
         build_system="cmake",
         source_dir="source",
     ),
@@ -484,9 +486,30 @@ def main():
     else:
         run(["strip", "-s"] + libraries)
 
-    # build output tarball
+    # build output tarball (reproducible: fixed timestamps, sorted entries)
     os.makedirs(output_dir, exist_ok=True)
-    run(["tar", "czvf", output_tarball, "-C", dest_dir, "bin", "include", "lib"])
+    with gzip.GzipFile(output_tarball, "wb", mtime=0) as gz:
+        with tarfile.open(fileobj=gz, mode="w|") as tar:
+            for subdir in ("bin", "include", "lib"):
+                subdir_path = os.path.join(dest_dir, subdir)
+                if not os.path.exists(subdir_path):
+                    continue
+                for root, dirs, files in os.walk(subdir_path):
+                    dirs.sort()
+                    for name in sorted(files):
+                        filepath = os.path.join(root, name)
+                        arcname = os.path.relpath(filepath, dest_dir)
+                        info = tar.gettarinfo(filepath, arcname=arcname)
+                        info.mtime = 0
+                        info.uid = 0
+                        info.gid = 0
+                        info.uname = ""
+                        info.gname = ""
+                        if info.issym() or info.islnk():
+                            tar.addfile(info)
+                        else:
+                            with open(filepath, "rb") as f:
+                                tar.addfile(info, f)
 
 
 if __name__ == "__main__":