diff --git a/README.md b/README.md
index ce8bc015..9cc4a91c 100644
--- a/README.md
+++ b/README.md
@@ -350,3 +350,30 @@ THE POSSIBILITY OF SUCH DAMAGE.
 損害、間接損害、偶発的な損害、特別損害、懲罰的損害、または結果損害について、
 一切責任を負わないものとします。
 ```
+
+### zydis
+
+```
+The MIT License (MIT)
+
+Copyright (c) 2014-2020 Florian Bernd
+Copyright (c) 2014-2020 Joel Höner
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+```
diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index e5bbb936..9419e1da 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -40,3 +40,10 @@ if (NOT TARGET xbyak)
         target_compile_definitions(xbyak INTERFACE XBYAK_NO_OP_NAMES)
     endif()
 endif()
+
+# zydis
+
+option(ZYDIS_BUILD_TOOLS "" OFF)
+option(ZYDIS_BUILD_EXAMPLES "" OFF)
+set(ZYDIS_ZYCORE_PATH "${CMAKE_CURRENT_LIST_DIR}/zycore" CACHE PATH "")
+add_subdirectory(zydis)
diff --git a/externals/README.md b/externals/README.md
index c1caca55..94ba26b0 100644
--- a/externals/README.md
+++ b/externals/README.md
@@ -8,6 +8,8 @@ git remote add externals-mp https://github.com/MerryMage/mp.git --no-tags
 git remote add externals-robin-map https://github.com/Tessil/robin-map.git --no-tags
 git remote add externals-vixl https://git.linaro.org/arm/vixl.git --no-tags
 git remote add externals-xbyak https://github.com/herumi/xbyak.git --no-tags
+git remote add externals-zycore https://github.com/zyantific/zycore-c.git --no-tags
+git remote add externals-zydis https://github.com/zyantific/zydis.git --no-tags
 ```
 
 ## Updating
@@ -20,9 +22,13 @@ git fetch externals-mp
 git fetch externals-robin-map
 git fetch externals-vixl
 git fetch externals-xbyak
+git fetch externals-zycore
+git fetch externals-zydis
 git subtree pull --squash --prefix=externals/fmt externals-fmt <ref>
 git subtree pull --squash --prefix=externals/mp externals-mp <ref>
 git subtree pull --squash --prefix=externals/robin-map externals-robin-map <ref>
 git subtree pull --squash --prefix=externals/vixl/vixl externals-vixl <ref>
 git subtree pull --squash --prefix=externals/xbyak externals-xbyak <ref>
+git subtree pull --squash --prefix=externals/zycore externals-zycore <ref>
+git subtree pull --squash --prefix=externals/zydis externals-zydis <ref>
 ```