diff --git a/testing/libretro-blastem/APKBUILD b/testing/libretro-blastem/APKBUILD
index cc977de60d9a8cba5c9e102be3a635b274494018..cf4689aa7733ce2c07886e4d77e6fc397f3f3a97 100644
--- a/testing/libretro-blastem/APKBUILD
+++ b/testing/libretro-blastem/APKBUILD
@@ -2,23 +2,27 @@
 # Maintainer: David Demelier <markand@malikania.fr>
 pkgname=libretro-blastem
 pkgver=0_git20210312
-pkgrel=0
+pkgrel=1
 _commit="e70b05bf5b5954140cba227fc996ab24c064d494"
 pkgdesc="fast and accurate Genesis emulator"
 url="https://github.com/libretro/blastem"
 arch="all !aarch64 !armv7 !armhf !x86 !mips !mips64"
 license="GPL-3.0-only"
-makedepends="mesa-dev"
-source="$pkgname-$_commit.tar.gz::https://github.com/libretro/blastem/archive/$_commit.tar.gz"
+makedepends="mesa-dev zlib-dev"
+source="$pkgname-$_commit.tar.gz::https://github.com/libretro/blastem/archive/$_commit.tar.gz
+	patch-unbundle.patch
+	"
 builddir="$srcdir/blastem-$_commit"
 options="!check" # No tests
 
 build() {
-	make -f Makefile.libretro GIT_VERSION="$_SCOMMIT"
+	rm -rf zlib
+	make -f Makefile.libretro HOST_ZLIB=1
 }
 
 package() {
 	install -Dm644 "$builddir"/blastem_libretro.so "$pkgdir"/usr/lib/libretro/blastem_libretro.so
 }
 
-sha512sums="6b8a47c8eaad455a027a6558be50a6df5414c4c92e87edb5326487e6be5b248b6bfb398ae8c2ff73f535ba20ca1dec1661cceaee23ae50b3676a666758879fb3  libretro-blastem-e70b05bf5b5954140cba227fc996ab24c064d494.tar.gz"
+sha512sums="6b8a47c8eaad455a027a6558be50a6df5414c4c92e87edb5326487e6be5b248b6bfb398ae8c2ff73f535ba20ca1dec1661cceaee23ae50b3676a666758879fb3  libretro-blastem-e70b05bf5b5954140cba227fc996ab24c064d494.tar.gz
+0ffdbdb9aadc147e971589b162c444ecffa72b297351538ab5546b28088e7e345d61268f9feb143f5620202c6dad4bc4ac5b1ffcd330c99aa8b54065f09cb960  patch-unbundle.patch"
diff --git a/testing/libretro-blastem/patch-unbundle.patch b/testing/libretro-blastem/patch-unbundle.patch
new file mode 100644
index 0000000000000000000000000000000000000000..8f4f862f34fa7718934ca7a8765d95b23cf4a453
--- /dev/null
+++ b/testing/libretro-blastem/patch-unbundle.patch
@@ -0,0 +1,92 @@
+Remove bundled zlib.
+--- a/Makefile
++++ b/Makefile
+@@ -6,9 +6,6 @@
+ endif
+ FIXUP:=true
+ 
+-BUNDLED_LIBZ:=zlib/adler32.o zlib/compress.o zlib/crc32.o zlib/deflate.o zlib/gzclose.o zlib/gzlib.o zlib/gzread.o\
+-	zlib/gzwrite.o zlib/infback.o zlib/inffast.o zlib/inflate.o zlib/inftrees.o zlib/trees.o zlib/uncompr.o zlib/zutil.o
+-
+ ifeq ($(OS),Windows)
+ 
+ GLEW_PREFIX:=glew
+@@ -74,7 +71,7 @@
+ endif #Darwin
+ 
+ ifdef HOST_ZLIB
+-LIBS+= zlib
++LIBS+= -lz
+ LIBZOBJS=
+ else
+ LIBZOBJS=$(BUNDLED_LIBZ)
+--- a/blastem.c
++++ b/blastem.c
+@@ -65,7 +65,7 @@
+ #define romgetc fgetc
+ #define romclose fclose
+ #else
+-#include "zlib/zlib.h"
++#include <zlib.h>
+ #define ROMFILE gzFile
+ #define romopen gzopen
+ #define romread gzfread
+--- a/event_log.c
++++ b/event_log.c
+@@ -13,11 +13,13 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <errno.h>
++
++#include <zlib.h>
++
+ #include "event_log.h"
+ #include "util.h"
+ #include "blastem.h"
+ #include "saves.h"
+-#include "zlib/zlib.h"
+ 
+ enum {
+ 	CMD_GAMEPAD_DOWN,
+--- a/event_log.h
++++ b/event_log.h
+@@ -1,6 +1,8 @@
+ #ifndef EVENT_LOG_H_
+ #define EVENT_LOG_H_
+ 
++#include <zlib.h>
++
+ enum {
+ 	EVENT_FLUSH = 0,
+ 	EVENT_ADJUST = 1,
+@@ -20,7 +22,6 @@
+ };
+ 
+ #include "serialize.h"
+-#include "zlib/zlib.h"
+ typedef struct {
+ 	size_t storage;
+ 	uint8_t *socket_buffer;
+--- a/png.c
++++ b/png.c
+@@ -2,7 +2,8 @@
+ #include <stdlib.h>
+ #include <stdio.h>
+ #include <string.h>
+-#include "zlib/zlib.h"
++
++#include <zlib.h>
+ 
+ static const char png_magic[] = {0x89, 'P', 'N', 'G', '\r', '\n', 0x1A, '\n'};
+ static const char ihdr[] = {'I', 'H', 'D', 'R'};
+--- a/zip.c
++++ b/zip.c
+@@ -5,7 +5,7 @@
+ #include "util.h"
+ #include "zip.h"
+ #ifndef DISABLE_ZLIB
+-#include "zlib/zlib.h"
++#include <zlib.h>
+ #endif
+ 
+ static const char cdfd_magic[4] = {'P', 'K', 1, 2};