diff --git a/README.md b/README.md
index 08cfe99..b3020a9 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,8 @@
 | 31.10.2023 | [Apache Pig – решение задач](lectures/IIS_lec_9.pdf) [pptx](lectures/IIS_lec_9.pptx) | 
 | 14.11.2023 | [Apache Hive](lectures/IIS_lec_10.pdf) [pptx](lectures/IIS_lec_10.pptx) | 
 | 21.11.2023 | [NoSQL базы данных](lectures/IIS_lec_11.pdf) [pptx](lectures/IIS_lec_11.pptx) | 
-| 05.12.2023 | [СУБД HBase](lectures/IIS_lec_12.pdf) [pptx](lectures/IIS_lec_12.pptx) | 
+| 28.11.2023 | [СУБД HBase](lectures/IIS_lec_12.pdf) [pptx](lectures/IIS_lec_12.pptx) | 
+| 05.12.2023 | [СУБД Cassandra](lectures/IIS_lec_13.pdf) [pptx](lectures/IIS_lec_13.pptx) | 
 | 12.12.2023 | [Фреймворк Spark](lectures/IIS_lec_14.pdf)| 
 
 ## Лабораторные работы