diff --git a/devel/own-projects/update-release-dates.sh b/devel/own-projects/update-release-dates.sh
new file mode 100755
index 00000000..38003ef0
--- /dev/null
+++ b/devel/own-projects/update-release-dates.sh
@@ -0,0 +1,78 @@
+#!/bin/bash
+set -e # abort on first error
+shopt -s nullglob
+source "$(dirname $0)/../versions.sh"
+
+if ! [[ $GITHUB_TOKEN ]]; then
+    echo "Don't forget to set \$GITHUB_TOKEN."
+    exit -2
+fi
+
+gh_user=Martchus
+new_release_date=$(date --iso-8601)
+old_release_date_regex='set\(META_RELEASE_DATE "([^\)]*)"\)'
+
+# read project dirs; split colon separated path
+OIFS=$IFS
+IFS=':'
+for dir in $DEFAULT_PROJECTS_DIR; do
+    projectsdirs+=("$dir")
+done
+IFS=$OIFS
+
+# check whether the project will be released and set the current day as release date then
+for project in "${!versions[@]}"
+do
+    version=${versions[$project]}
+    gh_name=${github_names[$project]:-$project}
+    [[ $gh_name == 'skip' ]] && continue
+    [[ $version == 'none' ]] && continue
+    echo '------------------------------------------------------------------------'
+    echo "NEXT: $project -> $version"
+
+    # check whether release already exists
+    if github-release info --user "$gh_user" --repo "$gh_name" --tag "v$version"; then
+        echo "skipping $project -> v$version; release already present"
+        continue
+    fi
+
+    # locate project
+    project_dir=
+    for dir in "${projectsdirs[@]}"; do
+        [[ -d $dir/$project ]] && project_dir=$dir/$project && break
+    done
+    if [[ ! $project_dir ]]; then
+        echo "FAILURE: Unable to locate checkout of $project"
+        continue
+    fi
+    echo "entering '$project_dir'"
+    cd "$project_dir"
+
+    # check current release date
+    cmake_lists=$(cat CMakeLists.txt)
+    if ! [[ $cmake_lists =~ $old_release_date_regex ]]; then
+        echo "FAILURE: Unable to read current release date from CMakeLists.txt:\n$cmake_lists"
+        continue
+    fi
+    old_release_date=${BASH_REMATCH[1]}
+    if [[ $old_release_date == "$new_release_date" ]]; then
+        echo "skipping $project -> release date $old_release_date does not change"
+        continue
+    fi
+
+    if ! [ -z "$(git status --porcelain)" ]; then
+        echo "FAILURE: Git checkout '$PWD' is not clean"
+        continue
+    fi
+
+    # promt
+    read -p "update release date of $project -> v$version [y/n]? " -n 1 -r
+    echo
+    [[ $REPLY =~ ^[Yy]$ ]] || continue
+
+    # update release date
+    sed -i -e "s|set(META_RELEASE_DATE.*|set(META_RELEASE_DATE \"$new_release_date\")|" CMakeLists.txt
+    git add CMakeLists.txt
+    git commit -m 'Update release date'
+    git push
+done