diff --git a/README.md b/README.md
index ff67ebd..c385bb9 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,10 @@
 
 Download [iso image file](https://repo.bioarchlinux.org/iso) from [any mirror](https://raw.githubusercontent.com/BioArchLinux/mirror/main/mirrorlist.bio) of BioArchLinux.
 
+## Release
+
+This iso is released monthly.
+
 ## Build
 
 This is build by mkarchiso.