diff --git a/scripts/obs/update_obs_eclipse_titan.sh b/scripts/obs/update_obs_eclipse_titan.sh
new file mode 100755
index 0000000..6efb7c6
--- /dev/null
+++ b/scripts/obs/update_obs_eclipse_titan.sh
@@ -0,0 +1,40 @@
+#!/bin/sh -e
+# https://osmocom.org/projects/cellular-infrastructure/wiki/Upgrading_eclipse-titan_in_the_Osmocom_OBS
+DIR="$(realpath "$(dirname "$0")")"
+PROJ="$1"
+GIT_URL="https://gitea.osmocom.org/osmith/titan.core"
+CHECKOUT="osmocom/9.0.0"
+
+prepare_git_repo() {
+	cd "$DIR"
+	if ! [ -d _cache/eclipse-titan ]; then
+		mkdir -p _cache
+		git -C _cache clone "$GIT_URL" eclipse-titan
+	fi
+
+	cd _cache/eclipse-titan
+	git fetch
+	git clean -fdx
+	git checkout -f -B "$CHECKOUT"
+	git reset --hard origin/"$CHECKOUT"
+}
+
+update_obs_project() {
+	cd "$DIR"
+	./update_obs_project.py \
+		--apiurl https://obs.osmocom.org \
+		--docker \
+		--allow-unknown-package \
+		--git-skip-checkout \
+		--git-skip-fetch \
+		--version-append "~osmocom" \
+		"$PROJ" \
+		eclipse-titan
+}
+
+set -x
+prepare_git_repo
+
+if [ -n "$PROJ" ]; then
+	update_obs_project
+fi