diff --git a/app-forensics/sleuthkit/Manifest b/app-forensics/sleuthkit/Manifest
index 56201777a0457..6ae584f4429b4 100644
--- a/app-forensics/sleuthkit/Manifest
+++ b/app-forensics/sleuthkit/Manifest
@@ -1,4 +1,5 @@
 DIST SparseBitSet-1.1.jar 23706 BLAKE2B 8623a723f11f97386a108c775fefddd324997b68bea7f7ade0581ec5800bfa8d32f699ab903ad66c631b7b5c69ba1ef377243653f5044f39234dac07543eb129 SHA512 cf75431c5f705961800ce5cbca2acb9b2459eaf98ec37b5ee21c5a90d204ffb466fa25457b0560fbb024489777efbea0276201024c7b1b2853124930ac490983
+DIST commons-validator-1.6.jar 186077 BLAKE2B 39080bebfde71d87847b65f212d47a51bab9567cb0aaf7122359a67a8eb817877a6cc80495a15aefb12936d0e36532ed771dc0a2dff8401fc301f658ed38ef88 SHA512 aded530d3b79ead6ba5c44668c6d6964d7721f9617249f6aaa1c8f558ad4b3d3c1b6d78b639a4cb8dd27a671879b662fdbba0502fd04e131f3286169507df30c
 DIST gson-2.8.5.jar 241622 BLAKE2B b13887177b5d5f2a11b2dde1fdbaa3a95b55bb7b5500624c7eb0745e861c897ed1e27868bad19d30a1670c90f3068a8fd40e1b81e5e25e96819fa5c371a5e1af SHA512 5dd7214c542a7b93aab3eab0ba13e4ac3d6ddb05c795fb6d3992e21925a98dce87cb186ac67b4d3ad146f96e14d38b3892837eca57a27b4e845aca6d4e4f708a
 DIST libewf-20130128.tar.gz 1978794 BLAKE2B e5d2bd8f4a8b878e13536b89b032d8cee6982272065b2bf325f8a811dff258264118a79496912377337ceb9ad630138b6bedb89e3c3be89a5f6a6fea85ab586b SHA512 94cdd0c3f0d8f535f3462c5adba266302f9b129abacda077ed429fa38af6862fca5a90ba2e606b78607b509769305cc6134c483c7033c20e226596cca2d42b90
 DIST sleuthkit-4.5.0.tar.gz 8611141 BLAKE2B a1ae66bfcb74ce1fec24f80dfe60cd68f1de53119331c38848f7f82de8052eda49d78fdea49e42ada5843094939ef212dece42a5ceb85931a79e02adccda30e6 SHA512 911890cacca739f121681514197104cb2dc3bd219f3e068c4ce61264498c56989359976fc75172e1f456c94e4e25c6206413b0234c36e55736a577b8e664e4b3
@@ -7,6 +8,7 @@ DIST sleuthkit-4.6.6.tar.gz 8668433 BLAKE2B 49594dd329e7c67c473130659bbdab02d448
 DIST sleuthkit-4.6.7.tar.gz 8672554 BLAKE2B def0bc3cd4c1ae1485efe683f581209b2c57bdcb1009bdd0b81cff284b6d3cb221a85ef12012a360bf2c07f84f12a6741ab2281cd0f51ecaff4685b84bf0ea1f SHA512 5b2000960a054fd947acb214532076a369d788914a8ff141c9a2d1b8a69e001c891b1e4b8dd40f94d96810a436e240e5a76e9f90ccab462888fad789c1181cc6
 DIST sleuthkit-4.7.0.tar.gz 8715010 BLAKE2B cdbe4ff4d3a4f6606dec9fc7dc867c9186fc628cba02ea21240875b5da0b1c61c65f9d68b8059651026f06bfd2976bc10d3077cf765083ef97c631af85e27c62 SHA512 bd39101f89615485c17d72836689ee14cf1199c26f2a84a56c4a127d6ced1acf091ff8a4bd373acd970c8a88e3625edc3f6e7d028f292f74439590b11c15be80
 DIST sleuthkit-4.8.0.tar.gz 10176958 BLAKE2B 65922a680e32effaedf669d076a242facbea98c6f53df841936bcd8b65a903309265c8a3e74bccd8e4d2694c8d10cb700079fc4499fcd82f02a27fedd38a446e SHA512 6dd225225c59013c128015f9b71b73bb82ba21887a695f8bc7325e1d11e2471d6e364077631b8d543c8c25ce9781470893f37998c38151347bb96d258f13ccc7
+DIST sleuthkit-4.9.0.tar.gz 3473764 BLAKE2B 3950e586595f53a81c845b3b1fbaf4939a84ee3d81e8141cabf41c9fbee1b1f5cf1b8bd6cab95b157d60364541736f750c8ada61c76da89e663721b9a67330ef SHA512 1db8b9f825aa551fe5bdf01285832b903fb4f2d6a8fd9a57a5cd5c9005dfdbec22d3dd49d394616d838e2a2111110018e787f2ed467a1c27a500fc75bed0dd0b
 DIST sleuthkit-libewf_64bit-20130416.tar.gz 23818247 BLAKE2B 23be933ed8a74e4834ee6571a28d81ba16e98e4e4e27b5b1b3b655d1d92a6eadcba35aadf96aa404e6e0a225b27f3f5daff2836879b87fe58440a3ad5645de44 SHA512 611cbb57de17600caee0330bbe9917c4481d7711a35dba8c072fd49cd3e1714e0a3ce30fd8fcac9981db848e80870bf5d215326c56808bb6f5b4c8dcc1e5a3c9
 DIST sqlite-jdbc-3.25.2.jar 7064881 BLAKE2B 3917da6127137bab710a9e61f326f59320ce94654ebb8ae5e694b05aed6b9b1bd367ade2f08ce5bb52c3ac296992240ad949969f5eff712615d07a18588c6a17 SHA512 efd1ea26d7f4f9bc66bf0d5f80234a0c535829bd498e4c5a0cab42873b58ac69133497d8c45689a1d3a39e657a2d0474d6b930c7bc415dd623801ee4a7354ffb
 DIST sqlite-jdbc-3.8.11.jar 5131732 BLAKE2B 1a04fa9e9cb97fdddc19af2de9efa7b54c0b527642e6e325e31054e4e294e3bc6af00ea291087ed9dd26668d48dae356035fc85212c0eb81656550d552103ed0 SHA512 5f4705101992e8916e29742c560aef0d01eba9dc0d2d984b75a77e56be3c9fd20b284390fe8f9bb54bf9d1f8528c3413922684c446212ca8961ac731543fb179
diff --git a/app-forensics/sleuthkit/sleuthkit-4.9.0.ebuild b/app-forensics/sleuthkit/sleuthkit-4.9.0.ebuild
new file mode 100644
index 0000000000000..fcc3132067ef7
--- /dev/null
+++ b/app-forensics/sleuthkit/sleuthkit-4.9.0.ebuild
@@ -0,0 +1,298 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+JAVA_PKG_BSFIX_NAME="build.xml build-unix.xml"
+inherit autotools java-pkg-opt-2 java-ant-2
+
+DESCRIPTION="A collection of file system and media management forensic analysis tools"
+HOMEPAGE="https://www.sleuthkit.org/sleuthkit/"
+# TODO: sqlite-jdbc does not exist in the tree, we bundle it for now
+#		See: https://bugs.gentoo.org/690010
+# TODO: SparseBitSet does not exist in the tree, we bundle it for now
+#		See: https://bugs.gentoo.org/690012
+# TODO: Upstream uses a very specific version of libewf which is not in
+#       the tree anymore. So we statically compile and link to sleuthkit.
+#       Hopefully upstream will figure something out in the future.
+#		See: https://bugs.gentoo.org/689752
+# TODO: gson-2.8.5 does not exist in the tree. Building it seems to
+# 		require Java 9. We have Java 11 in the tree but I don't see a
+# 		way to use it as a gentoo-vm in order to build gson. Sleuthkit
+# 		upstream still uses Java 8.
+# 		See: https://bugs.gentoo.org/706274
+# TODO: commons-validator-1.6 does not exist in the tree. The latest version
+#		as of writing this ebuild is 1.4.1, for which the build fails. As
+#		per #711930, this is a security sensitive bump. We're gonna fetch
+#		the jar file here and file a bug request for a bump as well:
+#		    https://bugs.gentoo.org/721020
+SRC_URI="https://github.com/${PN}/${PN}/releases/download/${P}/${P}.tar.gz
+	java? (
+		https://repo1.maven.org/maven2/com/google/code/gson/gson/2.8.5/gson-2.8.5.jar
+		http://repo1.maven.org/maven2/org/xerial/sqlite-jdbc/3.25.2/sqlite-jdbc-3.25.2.jar
+		http://repo1.maven.org/maven2/com/zaxxer/SparseBitSet/1.1/SparseBitSet-1.1.jar
+		https://repo1.maven.org/maven2/commons-validator/commons-validator/1.6/commons-validator-1.6.jar
+	)
+	ewf? ( https://github.com/sleuthkit/libewf_64bit/archive/VisualStudio_2010.tar.gz -> sleuthkit-libewf_64bit-20130416.tar.gz )"
+
+LICENSE="BSD CPL-1.0 GPL-2+ IBM java? ( Apache-2.0 )"
+SLOT="0/13" # subslot = major soname version
+KEYWORDS="~amd64 ~hppa ~ppc ~x86"
+IUSE="aff doc ewf java postgres static-libs test +threads zlib"
+RESTRICT="!test? ( test )"
+
+#
+# Note: It is not possible to move the dep on dev-java/jdbc-postgresql
+# inside a conditional postgres? block because java sources import
+# org.postgres unconditionally as of writing this (version 4.6.4). The
+# postgres USE flag will be used for the TSK postgresql support however.
+#
+DEPEND="
+	dev-db/sqlite:3
+	dev-lang/perl:*
+	aff? ( app-forensics/afflib )
+	ewf? ( sys-libs/zlib )
+	java? (
+		>=dev-java/c3p0-0.9.5:0
+		dev-java/commons-lang:3.1
+		dev-java/guava:20
+		>=dev-java/jdbc-postgresql-9.4:0
+		>=dev-java/joda-time-2.4:0
+	)
+	postgres? ( dev-db/postgresql:= )
+	zlib? ( sys-libs/zlib )
+"
+# TODO: add support for not-in-tree libraries libvhdi and libvmdk
+# libvhdi: https://github.com/libyal/libvhdi
+# libvmdk: https://github.com/libyal/libvmdk
+# DEPEND="${DEPEND}
+# 	vhdi? ( dev-libs/libvhdi )
+# 	vmdk? ( dev-libs/libvmdk )
+# "
+
+RDEPEND="${DEPEND}
+	java? (
+		|| (
+			virtual/jre:1.8
+			virtual/jdk:1.8
+		)
+	)
+"
+DEPEND="${DEPEND}
+	java? ( virtual/jdk:1.8 )
+	doc? ( app-doc/doxygen )
+	test? ( >=dev-util/cppunit-1.2.1 )
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-4.1.0-tools-shared-libs.patch
+	"${FILESDIR}"/${PN}-4.6.4-default-jar-location-fix.patch
+)
+
+src_unpack() {
+	local f
+
+	unpack ${P}.tar.gz
+
+	if use ewf; then
+		pushd "${T}" &>/dev/null || die
+		unpack sleuthkit-libewf_64bit-20130416.tar.gz
+		export TSK_LIBEWF_SRCDIR="${T}"/libewf_64bit-VisualStudio_2010
+		popd &>/dev/null || die
+	fi
+
+	# Copy the jar files that don't exist in the tree yet
+	if use java; then
+		TSK_JAR_DIR="${T}/lib"
+		mkdir "${TSK_JAR_DIR}" || die
+		for f in ${A}; do
+			if [[ ${f} =~ .jar$ ]]; then
+				cp "${DISTDIR}"/"${f}" "${TSK_JAR_DIR}" || die
+			fi
+		done
+		export TSK_JAR_DIR
+	fi
+}
+
+tsk_prepare_libewf() {
+	# Inlining breaks the compilation, disable it
+	sed -e 's/LIBUNA_INLINE inline/LIBUNA_INLINE/' \
+		-i "${TSK_LIBEWF_SRCDIR}"/libuna/libuna_inline.h || die
+}
+
+src_prepare() {
+	use ewf && tsk_prepare_libewf
+
+	if use java; then
+		pushd "${S}"/bindings/java &>/dev/null || die
+
+		# Prevent "make install" from installing
+		# jar files under /usr/share/java
+		# We'll use the java eclasses for this
+		# See: https://github.com/sleuthkit/sleuthkit/pull/1379
+		sed -e '/^jar_DATA/ d;' -i Makefile.am || die
+
+		java-pkg-opt-2_src_prepare
+
+		popd &>/dev/null || die
+	fi
+
+	# Override the doxygen output directories
+	if use doc; then
+		sed -e "/^OUTPUT_DIRECTORY/ s|=.*$|= ${T}/doc|" \
+			-i tsk/docs/Doxyfile \
+			-i bindings/java/doxygen/Doxyfile || die
+	fi
+
+	# It's safe to call this even after java-pkg-opt-2_src_prepare
+	# because future calls to eapply_user do nothing and return 0
+	default
+
+	eautoreconf
+}
+
+tsk_compile_libewf() {
+	local myeconfargs=(
+		--prefix=/
+		--libdir=/lib
+		--enable-static
+		--disable-shared
+		--disable-winapi
+		--without-libbfio
+		--with-zlib
+		--without-bzip2
+		--without-libhmac
+		--without-openssl
+		--without-libuuid
+		--without-libfuse
+
+		--with-libcstring=no
+		--with-libcerror=no
+		--with-libcdata=no
+		--with-libclocale=no
+		--with-libcnotify=no
+		--with-libcsplit=no
+		--with-libuna=no
+		--with-libcfile=no
+		--with-libcpath=no
+		--with-libbfio=no
+		--with-libfcache=no
+		--with-libfvalue=no
+
+	)
+	# We want to contain our build flags
+	local CFLAGS="${CFLAGS}"
+	local LDFLAGS="${LDFLAGS}"
+
+	pushd "${TSK_LIBEWF_SRCDIR}" &>/dev/null || die
+
+	# Produce relocatable code
+	CFLAGS+=" -fPIC"
+	LDFLAGS+=" -fPIC"
+	econf "${myeconfargs[@]}"
+
+	# Do not waste CPU cycles on building ewftools
+	sed -e '/ewftools/ d' -i Makefile || die
+	emake
+
+	# Only install the headers and the library
+	emake -C libewf DESTDIR="${T}"/image install
+	emake -C include DESTDIR="${T}"/image install
+	find "${T}"/image -name '*.la' -delete || die
+
+	popd &>/dev/null || die
+}
+
+src_configure() {
+	local myeconfargs=(
+		--enable-offline="${TSK_JAR_DIR}"
+		$(use_enable java)
+		$(use_enable static-libs static)
+		$(use_enable threads multithreading)
+		$(use_with aff afflib)
+		$(use_with zlib)
+	)
+	# Workaround the automagic detection of postgresql
+	local -x ac_cv_lib_pq_PQlibVersion="$(usex postgres)"
+	# TODO: add support for non-existing libraries libvhdi and libvmdk
+	# myeconfargs+=(
+	# 	$(use_with vhdi libvhdi)
+	# 	$(use_with vmdk libvmdk)
+	# )
+	myeconfargs+=(
+		--without-libvhdi
+		--without-libvmdk
+	)
+
+	use ewf && tsk_compile_libewf
+	myeconfargs+=( $(use_with ewf libewf "${T}"/image) )
+
+	if use java; then
+		pushd "${S}"/bindings/java &>/dev/null || die
+		java-ant-2_src_configure
+		popd &>/dev/null || die
+	fi
+
+	econf "${myeconfargs[@]}"
+}
+
+src_compile() {
+	# Give it an existing bogus ivy home #672220
+	local -x IVY_HOME="${T}"
+
+	# Create symlinks of jars for the required dependencies
+	if use java; then
+		pushd "${S}"/bindings/java &>/dev/null || die
+
+		java-pkg_jar-from --into "${TSK_JAR_DIR}" c3p0
+		java-pkg_jar-from --into "${TSK_JAR_DIR}" commons-lang:3.1
+		java-pkg_jar-from --into "${TSK_JAR_DIR}" guava:20
+		java-pkg_jar-from --into "${TSK_JAR_DIR}" jdbc-postgresql
+		java-pkg_jar-from --into "${TSK_JAR_DIR}" joda-time
+
+		popd &>/dev/null || die
+	fi
+
+	# Create the doc output dirs if requested
+	if use doc; then
+		mkdir -p "${T}"/doc/{api-docs,jni-docs} || die
+	fi
+
+	emake all $(usex doc api-docs "")
+}
+
+src_install() {
+	local f
+
+	if use java; then
+		pushd "${S}"/bindings/java &>/dev/null || die
+
+		java-pkg_newjar "dist/${P}.jar" "${PN}.jar"
+
+		# Install the bundled jar files
+		pushd "${TSK_JAR_DIR}" &>/dev/null || die
+		for f in *; do
+			# Skip the symlinks java-pkg_jar-from created
+			[[ -f ${f} ]] || continue
+
+			# Strip the version numbers as per eclass recommendation
+			[[ ${f} =~ -([0-9]+\.)+jar$ ]] || continue
+
+			java-pkg_newjar "${f}" "${f/${BASH_REMATCH[0]}/.jar}"
+		done
+		popd &>/dev/null || die
+
+		popd &>/dev/null || die
+	fi
+
+	default
+
+	# It unconditionally builds both api and jni docs
+	# We install conditionally based on the provided use flags
+	if use doc; then
+		dodoc -r "${T}"/doc/api-docs
+		use java && dodoc -r "${T}"/doc/jni-docs
+	fi
+
+	find "${D}" -name '*.la' -delete || die
+}