diff --git a/README.md b/README.md
index fe45fd7..fdfdf33 100644
--- a/README.md
+++ b/README.md
@@ -171,7 +171,7 @@ Feel free to [contribute](CONTRIBUTING.md).
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+ Open Threat Partner eXchange
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The Open Threat Partner eXchange (OpenTPX) consists of an open-source format and tools for exchanging machine-readable threat intelligence and network security operations data. It is a JSON-based format that allows sharing of data between connected systems.
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