diff --git a/science/ai/orchestrators/langchain/docs/articles.txt b/science/ai/orchestrators/langchain/docs/articles.txt
index a807d50e6..da763c41d 100644
--- a/science/ai/orchestrators/langchain/docs/articles.txt
+++ b/science/ai/orchestrators/langchain/docs/articles.txt
@@ -2,6 +2,7 @@
 https://habr.com/ru/articles/778170/
     https://gpt-docs.ideco.ru/
 2023
+https://nanonets.com/blog/langchain/
 https://www.reaminated.com/run-chatgpt-style-questions-over-your-own-files-using-the-openai-api-and-langchain
     https://github.com/keyboardP/ChatGPMe
     https://www.youtube.com/watch?v=fo0cg5pAh2g
diff --git a/security/isolation/firejail.txt b/security/isolation/firejail.txt
index 5998b60d7..1792cb575 100644
--- a/security/isolation/firejail.txt
+++ b/security/isolation/firejail.txt
@@ -1,4 +1,5 @@
 https://firejail.wordpress.com/
+    ! iptables-based
 https://github.com/netblue30/firejail
 https://github.com/netblue30/firejail/wiki
 https://github.com/netblue30/firejail/wiki/Frequently-Asked-Questions