diff --git a/RU/README.md b/RU/README.md
index 4065b7c3d35d232303a68a2c1fd1b60d1bf8c800..665453173a7799514918c518b1a8541723a5f096 100644
--- a/RU/README.md
+++ b/RU/README.md
@@ -1,7 +1,8 @@
 Documentation: 
 The CRIS NASA L1B Products and documentation, including 
 the NASA Cross-track Infrared Sounder (CrIS) Level 1B Radiometric 
-Uncertainty Description Document can be found at the following DOIs:
+Uncertainty Description Document (Version 3) can be found at the 
+following DOIs:
 
 -  SNPP NSR Version 3: https://doi.org/10.5067/OZZPDWENP2NC
 -  SNPP FSR Version 3: https://doi.org/10.5067/ZCRSHBM5HB23