diff --git a/papers.md b/papers.md
index 548553b..ec4764a 100644
--- a/papers.md
+++ b/papers.md
@@ -4,6 +4,8 @@
 
 > A `.bib` file for all papers listed is [available in the `tex` directory](https://github.com/iml-wg/HEP-ML-Resources/blob/master/tex/HEPML.bib).
 
+- A. Andreassen, P. T. Komiske, E. M. Metodiev, B. Nachman, and J. Thaler, "[OmniFold: A Method to Simultaneously Unfold All Observables](https://inspirehep.net/record/1766424)," arXiv:1911.09107 [hep-ph]. (November 20, 2019)
+
 - B. Nachman and C. Shimmin, "[AI Safety for High Energy Physics](https://inspirehep.net/record/1759867)," arXiv:1910.08606 [hep-ph]. (October 18, 2019)
 
 - M. Borisyak, N. Kazeev, "[Machine Learning on data with sPlot background subtraction](https://inspirehep.net/record/1737258)," arXiv:1905.11719 [cs.LG]. (May 28, 2019)
diff --git a/tex/HEPML.bib b/tex/HEPML.bib
index 366387f..9299ad1 100644
--- a/tex/HEPML.bib
+++ b/tex/HEPML.bib
@@ -1,5 +1,19 @@
 # HEPML Papers
 
+% November 20, 2019
+@article{Andreassen:2019cjw,
+      author         = "Andreassen, Anders and Komiske, Patrick T. and Metodiev,
+                        Eric M. and Nachman, Benjamin and Thaler, Jesse",
+      title          = "{OmniFold: A Method to Simultaneously Unfold All
+                        Observables}",
+      year           = "2019",
+      eprint         = "1911.09107",
+      archivePrefix  = "arXiv",
+      primaryClass   = "hep-ph",
+      reportNumber   = "MIT-CTP 5155",
+      SLACcitation   = "%%CITATION = ARXIV:1911.09107;%%"
+}
+
 % October 18, 2019
 @article{Nachman:2019yfl,
       author         = "Nachman, Benjamin and Shimmin, Chase",
diff --git a/tex/HEPML.tex b/tex/HEPML.tex
index b4e301a..db65f89 100644
--- a/tex/HEPML.tex
+++ b/tex/HEPML.tex
@@ -25,6 +25,7 @@
 \begin{document}
 
 \begin{itemize}
+ \item~\cite{Andreassen:2019cjw}
  \item~\cite{Nachman:2019yfl}
  \item~\cite{Borisyak:2019vbz}
  \item~\cite{DiSipio:2019imz}