diff --git a/.gitignore b/.gitignore
index 2454555..751f477 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-/zydis-*.tar*
+/zydis-4.0.0.tar.gz
diff --git a/README.packit b/README.packit
deleted file mode 100644
index 7017e6c..0000000
--- a/README.packit
+++ /dev/null
@@ -1,3 +0,0 @@
-This repository is maintained by packit.
-https://packit.dev/
-The file was generated using packit 1.1.0.post1.dev2+gf7b527d0.
diff --git a/a56a39f15efe64a41013ec142c028e6f72476232.patch b/a56a39f15efe64a41013ec142c028e6f72476232.patch
new file mode 100644
index 0000000..cbb3c07
--- /dev/null
+++ b/a56a39f15efe64a41013ec142c028e6f72476232.patch
@@ -0,0 +1,62 @@
+From a56a39f15efe64a41013ec142c028e6f72476232 Mon Sep 17 00:00:00 2001
+From: Felix Wang <77263945+topazus@users.noreply.github.com>
+Date: Sun, 30 Apr 2023 14:51:50 +0800
+Subject: [PATCH] Add ZYDIS_BUILD_TESTS option and include tests in
+ CMakeLists.txt
+
+---
+ CMakeLists.txt | 37 +++++++++++++++++++++++++++++++++++++
+ 1 file changed, 37 insertions(+)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index f9786010..fa0488ba 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -53,6 +53,9 @@ option(ZYDIS_BUILD_MAN
+ option(ZYDIS_BUILD_DOXYGEN
+     "Build doxygen documentation (requires Doxygen)"
+     ON)
++option(ZYDIS_BUILD_TESTS
++    "Build tests"
++    OFF)
+ option(ZYDIS_FUZZ_AFL_FAST
+     "Enables AFL persistent mode and reduces prints in ZydisFuzzIn"
+     OFF)
+@@ -491,3 +494,37 @@ if (ZYDIS_BUILD_MAN)
+     endforeach()
+     add_custom_target(man ALL DEPENDS ${MAN_NAMES})
+ endif ()
++
++# =============================================================================================== #
++# Tests                                                                                           #
++# =============================================================================================== #
++
++if (ZYDIS_BUILD_TESTS)
++    enable_testing()
++    find_package(Python 3 REQUIRED)
++
++    if (TARGET ZydisInfo)
++        add_test(
++            NAME "ZydisRegression"
++            COMMAND 
++                "${Python_EXECUTABLE}"
++                regression.py
++                test
++                $<TARGET_FILE:ZydisInfo>
++            WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/tests"
++        )
++    endif ()
++
++    if (TARGET ZydisFuzzReEncoding AND TARGET ZydisFuzzEncoder AND TARGET ZydisTestEncoderAbsolute)
++        add_test(
++            NAME "ZydisRegressionEncoder"
++            COMMAND 
++                "${Python_EXECUTABLE}"
++                regression_encoder.py
++                $<TARGET_FILE:ZydisFuzzReEncoding>
++                $<TARGET_FILE:ZydisFuzzEncoder>
++                $<TARGET_FILE:ZydisTestEncoderAbsolute>
++            WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/tests"
++        )
++    endif ()
++endif ()
diff --git a/c683b1273104b19300a830889e7d827e727c43e9.patch b/c683b1273104b19300a830889e7d827e727c43e9.patch
new file mode 100644
index 0000000..b28c509
--- /dev/null
+++ b/c683b1273104b19300a830889e7d827e727c43e9.patch
@@ -0,0 +1,22 @@
+From c683b1273104b19300a830889e7d827e727c43e9 Mon Sep 17 00:00:00 2001
+From: topazus <topazus@outlook.com>
+Date: Sat, 20 May 2023 21:13:50 -0400
+Subject: [PATCH] Fix the installation location of manpages
+
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index fa0488ba..104be96f 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -490,7 +490,7 @@ if (ZYDIS_BUILD_MAN)
+                 "--output-dir=${CMAKE_CURRENT_BINARY_DIR}"
+                 "${CMAKE_CURRENT_SOURCE_DIR}/man/${MAN_NAME}.ronn"
+         )
+-        install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${MAN_NAME}" TYPE MAN)
++        install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${MAN_NAME}" DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
+     endforeach()
+     add_custom_target(man ALL DEPENDS ${MAN_NAMES})
+ endif ()
diff --git a/packit.yaml b/packit.yaml
index 0687387..fe27113 100644
--- a/packit.yaml
+++ b/packit.yaml
@@ -10,16 +10,16 @@ jobs:
   - job: pull_from_upstream
     trigger: release
     dist_git_branches:
-      - fedora-rawhide
+      - fedora-all
 
   - job: koji_build
     trigger: commit
     allowed_pr_authors: ["packit", "topazus"]
     allowed_committers: ["packit", "topazus"]
     dist_git_branches:
-      - fedora-rawhide
+      - fedora-all
 
   - job: bodhi_update
     trigger: commit
     dist_git_branches:
-      - fedora-rawhide
+      - fedora-all
\ No newline at end of file
diff --git a/sources b/sources
index ec75936..6544ef9 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (zydis-5091440c2a1f963e00c6e6aceec7c4346e656fa4.tar.gz) = 8ee8a5c53828d3652be4a2b7ce7a25e557248828b053a371844faab5cf74ae7a34f5f432c768d593defcfc051333d5d24e742c3083051f711873d2ba39af4e21
+SHA512 (zydis-4.0.0.tar.gz) = 334284bccfb6ce61cc530fd479d6278db3e4df1fb52b311acd7d21558843c9bf14e74a199cd937041d434260b65c506c07ae1a37243d2240eb9443ae5e56e000
diff --git a/zydis.spec b/zydis.spec
index 03ec8e1..58bbd3c 100644
--- a/zydis.spec
+++ b/zydis.spec
@@ -1,27 +1,26 @@
 Name:           zydis
-Version:        5.0.0
-
-%global forgeurl https://github.com/zyantific/zydis
-%global commit 5091440c2a1f963e00c6e6aceec7c4346e656fa4
-%forgemeta
-
+Version:        4.0.0
 Release:        %autorelease
 Summary:        Fast and lightweight x86/x86-64 disassembler and code generation library
 
 License:        MIT
-URL:            %forgeurl
-Source0:        %forgesource
+URL:            https://github.com/zyantific/zydis
+Source0:        %{url}/archive/v%{version}/%{name}-%{version}.tar.gz
+
+# fix the installation location of man pages
+Patch0:         https://github.com/zyantific/zydis/commit/c683b1273104b19300a830889e7d827e727c43e9.patch
+# Add ZYDIS_BUILD_TESTS option and include tests in CMakeLists.txt
+Patch1:         https://github.com/zyantific/zydis/commit/a56a39f15efe64a41013ec142c028e6f72476232.patch
 
 ExcludeArch:    s390x
 
-BuildRequires:  gcc
-BuildRequires:  meson >= 1.3
-BuildRequires:  pkgconfig(zycore)
+BuildRequires:  gcc-c++
+BuildRequires:  cmake
+BuildRequires:  ninja-build
+BuildRequires:  zycore-c-devel
 BuildRequires:  doxygen
 # build man pages
 BuildRequires:  rubygem-ronn-ng
-# tests
-BuildRequires:  python3
 
 %description
 Zydis is fast and lightweight x86/x86-64 disassembler and code generation
@@ -60,33 +59,34 @@ Requires:       %{name}%{?_isa} = %{version}-%{release}
 The %{name}-tools package contains tools about %{name}.
 
 %prep
-%forgesetup
+%autosetup -p1
 
 %build
-%meson \
-    -Dtools=enabled \
-    -Dman=enabled \
-    -Ddoc=enabled \
-    -Dtests=enabled \
+%cmake \
+    -GNinja \
+    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+    -DZYAN_SYSTEM_ZYCORE=ON \
+    -DZYDIS_BUILD_SHARED_LIB=ON \
+    -DZYDIS_BUILD_MAN=ON \
+    -DZYDIS_BUILD_TESTS=ON \
 
-%meson_build
+%cmake_build
 
 %install
-%meson_install
+%cmake_install
 
 %check
-%ifnarch %{ix86}
-%meson_test
-%endif
+%ctest
 
 %files
 %license LICENSE
-%{_libdir}/libZydis.so.5*
+%{_libdir}/libZydis.so.4.0*
 
 %files devel
 %doc README.md
 %{_includedir}/Zydis/
-%{_libdir}/pkgconfig/zydis.pc
+%dir %{_libdir}/cmake/zydis
+%{_libdir}/cmake/zydis/*.cmake
 %{_libdir}/libZydis.so
 
 %files doc