diff --git a/type/__matrix_synapse/manifest b/type/__matrix_synapse/manifest
index 4650a17..40ce138 100755
--- a/type/__matrix_synapse/manifest
+++ b/type/__matrix_synapse/manifest
@@ -25,29 +25,22 @@ distribution=$(cat "$__global/explorer/lsb_codename")
 case "$os" in
 	debian)
 		synapse_user=matrix-synapse
-		synapse_pkg=matrix-synapse
+		synapse_pkg=matrix-synapse-py3
 		synapse_service=matrix-synapse
 		ldap_auth_provider_pkg=matrix-synapse-ldap3
 		synapse_conf_dir='/etc/matrix-synapse'
 		synapse_data_dir='/var/lib/matrix-synapse'
 
-		# See https://packages.debian.org/bullseye/matrix-synapse for state of
-		# synapse packaging in debian.
+		# We use upstream's APT repository in order to stay up-to-date: upstream
+		# moves fast and downstream debian package is necessarily delayed.
 		case "$distribution" in
-			stretch)
-				echo "The matrix-synapse package in debian stretch is outdated and unusable." >&2
-				exit 1
-				;;
-			buster)
-				# Enable debian-backports for debian Buster, as the 'stable'
-				# matrix-synapse package is ways too old (< 1.0).
-				apt_target_release=buster-backports
-				__apt_backports
-				;;
-				bullseye|sid)
-					# As of writting (2021-02), the default matrix-synapse of those
-					# release is perfectly usable.
-					:
+			buster|bulleye|bookworm|sid)
+				__apt_key matrix-org \
+					--uri https://packages.matrix.org/debian/matrix-org-archive-keyring.gpg
+				require="__apt_key/matrix-org" __apt_source matrix-org \
+					--uri https://packages.matrix.org/debian/ \
+					--component main
+				package_req="__apt_source/matrix-org"
 				;;
 				*)
 					echo "Unknown debian release '$distribution'. Exiting" >&2
@@ -309,25 +302,12 @@ case "$DATABASE_ENGINE" in
 esac
 
 
-# Install OS packages. We have a bit of boilerplate to handle the debian
-# backports situation.
-synapse_req=
-if [ -n "$apt_target_release" ]; then
-	require="__apt_backports" __package_apt "$synapse_pkg" \
-		--target-release "$apt_target_release"
-	synapse_req="__package_apt/$synapse_pkg"
-else
-	__package "$synapse_pkg"
-	synapse_req="__package/$synapse_pkg"
-fi
+# Install OS packages.
+require="$package_req" __package "$synapse_pkg"
+synapse_req="__package/$synapse_pkg"
 
 if [ -n "$ENABLE_LDAP_AUTH" ]; then
-	if [ -n "$apt_target_release" ]; then
-		require="__package_apt/$synapse_pkg" __package_apt "$ldap_auth_provider_pkg" \
-			--target-release "$apt_target_release"
-		else
-			__package "$ldap_auth_provider_pkg"
-	fi
+	require="$package_req" __package "$ldap_auth_provider_pkg"
 fi
 
 # Generate and deploy configuration files.