diff --git a/libretro/cores/scummvm/Tuprules.tup b/libretro/cores/scummvm/Tuprules.tup
new file mode 100644
index 0000000..d2a9af4
--- /dev/null
+++ b/libretro/cores/scummvm/Tuprules.tup
@@ -0,0 +1,33 @@
+CORE_PKGS += libc libm
+NO_UNDEFINED =
+	# Uses Genode API to create secondary stack
+
+GIT_VERSION = `git describe --always`
+CXXFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
+
+CFLAGS += -DSYSTEM_NOT_SUPPORTING_D_TYPE 
+CFLAGS += -O2
+
+ifeq ($(ARCH),x86_64)
+	CFLAGS += -DSIZEOF_SIZE_T=8 -DSCUMM_64BITS
+endif
+
+include upstream/backends/platform/libretro/build/Makefile.common
+include upstream/engines/engines.mk
+
+include upstream/common/module.mk
+
+: foreach $(SOURCES_C) |> !libretro_cc |> {libretro_objs}
+: foreach $(SOURCES_CXX) |> !libretro_cxx |> {libretro_objs}
+
+: {libretro_objs} |> !libretro_core_link |> {core}
+: {core} |> !publish_core |>
+
+#: $(TUP_CWD)/archives |> !publish_core_archives |> {package}
+#: $(TUP_CWD)/runtime |> !publish_core_runtime |> {package}
+
+ifdef DEPOT_KEY
+: {binary}  |> !depot_bin_tarball |> {tarballs}
+: {package} |> !depot_pkg_tarball |> {tarballs}
+: foreach {tarballs} |> !public_signature |>
+endif
diff --git a/libretro/cores/scummvm/upstream b/libretro/cores/scummvm/upstream
index b33f9fa..67d8eda 160000
--- a/libretro/cores/scummvm/upstream
+++ b/libretro/cores/scummvm/upstream
@@ -1 +1 @@
-Subproject commit b33f9fa3b5d7c9de4cccce190ac182b6209377be
+Subproject commit 67d8eda84bf0b6d0719f134333898588faaa28b5