diff --git a/README.md b/README.md
index 6ad16c0..90b5fde 100644
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+++ b/README.md
@@ -6,7 +6,7 @@ The repository also features a sample xApp, which connects to the [SCOPE](https:
 
 If you use this software, please reference the following paper:
 
-XXX
+M. Polese, L. Bonati, S. D'Oro, S. Basagni, T. Melodia, "ColoRAN: Design and Testing of Open RAN Intelligence on Large-scale Experimental Platforms," arXiv 2112.09559 [cs.NI], December 2021.
 
 This work was partially supported by the U.S. National Science Foundation under Grants CNS-1923789 and NSF CNS-1925601, and the U.S. Office of Naval Research under Grant N00014-20-1-2132.