diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
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+<!-- Please disclose any use of LLMs (ChatGPT, Copilot, Gemini, etc.) during the preparation of this PR. -->
+
+<!-- The following text must be left intact and the box checked before the PR can be merged. -->
+
+- [ ] By submitting this pull request, I assign the copyright of my contribution to _The igraph development team_.