diff --git a/3rdParty/zlib/CMakeLists.txt b/3rdParty/zlib/CMakeLists.txt
index 767103e49..f310ccb38 100644
--- a/3rdParty/zlib/CMakeLists.txt
+++ b/3rdParty/zlib/CMakeLists.txt
@@ -2,8 +2,8 @@ include(functions/FetchContent_MakeAvailableExcludeFromAll)
 
 include(FetchContent)
 FetchContent_Declare(zlib
-    URL https://www.zlib.net/zlib-1.2.11.tar.gz
-    URL_HASH MD5=1c9f62f0778697a09d36121ead88e08e
+    URL https://www.zlib.net/zlib-1.2.12.tar.gz
+    URL_HASH MD5=5fc414a9726be31427b440b434d05f78
 )
 FetchContent_MakeAvailableExcludeFromAll(zlib)
 
diff --git a/Packaging/amiga/prep.sh b/Packaging/amiga/prep.sh
index 011c2db1a..5f8420738 100755
--- a/Packaging/amiga/prep.sh
+++ b/Packaging/amiga/prep.sh
@@ -30,10 +30,10 @@ mkdir -p ${SYSROOT}/usr/include
 cd deps
 
 # ZLIB
-wget https://www.zlib.net/zlib-1.2.11.tar.gz -O zlib-1.2.11.tar.gz
-tar -xvf zlib-1.2.11.tar.gz
-mkdir -p zlib-1.2.11/build
-cd zlib-1.2.11
+wget https://www.zlib.net/zlib-1.2.12.tar.gz -O zlib-1.2.12.tar.gz
+tar -xvf zlib-1.2.12.tar.gz
+mkdir -p zlib-1.2.12/build
+cd zlib-1.2.12
 cmake -S. -Bbuild "${CMAKE_FLAGS[@]}" -DM68K_COMMON="${M68K_COMMON} -O3 -fno-exceptions -w -noixemul -DBIG_ENDIAN -DAMIGA -fpermissive -std=c++14"
 cmake --build build -j"$PARALLELISM" --config Release --target install
 cd ..
diff --git a/docs/building.md b/docs/building.md
index 7c43e8dcd..bdac2d24f 100644
--- a/docs/building.md
+++ b/docs/building.md
@@ -114,7 +114,7 @@ cmake --build build -j $(sysctl -n hw.ncpuonline)
 
 ### 32-bit
 
-Download the 32bit MinGW Development Libraries of [SDL2](https://www.libsdl.org/download-2.0.php) and [Libsodium](https://github.com/jedisct1/libsodium/releases) as well as headers for [zlib](https://zlib.net/zlib-1.2.11.tar.gz) and place them in `/usr/i686-w64-mingw32`. This can be done automatically by running `Packaging/windows/mingw-prep.sh`.
+Download the 32bit MinGW Development Libraries of [SDL2](https://www.libsdl.org/download-2.0.php) and [Libsodium](https://github.com/jedisct1/libsodium/releases) as well as headers for [zlib](https://zlib.net/zlib-1.2.12.tar.gz) and place them in `/usr/i686-w64-mingw32`. This can be done automatically by running `Packaging/windows/mingw-prep.sh`.
 
 ```
 sudo apt-get install cmake gcc-mingw-w64-i686 g++-mingw-w64-i686 pkg-config-mingw-w64-i686 libz-mingw-w64-dev
@@ -122,7 +122,7 @@ sudo apt-get install cmake gcc-mingw-w64-i686 g++-mingw-w64-i686 pkg-config-ming
 
 ### 64-bit
 
-Download the 64bit MinGW Development Libraries of [SDL2](https://www.libsdl.org/download-2.0.php) and [Libsodium](https://github.com/jedisct1/libsodium/releases) as well as headers for [zlib](https://zlib.net/zlib-1.2.11.tar.gz) and place them in `/usr/x86_64-w64-mingw32`. This can be done automatically by running `Packaging/windows/mingw-prep64.sh`.
+Download the 64bit MinGW Development Libraries of [SDL2](https://www.libsdl.org/download-2.0.php) and [Libsodium](https://github.com/jedisct1/libsodium/releases) as well as headers for [zlib](https://zlib.net/zlib-1.2.12.tar.gz) and place them in `/usr/x86_64-w64-mingw32`. This can be done automatically by running `Packaging/windows/mingw-prep64.sh`.
 
 ```
 sudo apt-get install cmake gcc-mingw-w64-x86-64 g++-mingw-w64-x86-64 pkg-config-mingw-w64-x86-64 libz-mingw-w64-dev