diff --git a/CITATION.cff b/CITATION.cff
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--- /dev/null
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+cff-version: 1.2.0
+message: If you use this work, please cite it as below.
+title: plotter
+type: software
+abstract: Simple web app for plotting Darwin Core occurrences
+url: https://github.com/iobis/plotter
+license: MIT
+authors:
+  - given-names: Pieter
+    family-names: Provoost
+    orcid: "https://orcid.org/0000-0002-4236-0384"
+  - name: Intergovernmental Oceanographic Commission of UNESCO
+    alias: IOC-UNESCO
+    website: "https://obis.org"
+date-released: 2017-09-22
diff --git a/LICENSE b/LICENSE
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+MIT License
+
+Copyright (c) 2026 Intergovernmental Oceanographic Commission of UNESCO
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.