diff --git a/.env b/.env
index d314829..cf6db02 100644
--- a/.env
+++ b/.env
@@ -1,3 +1,4 @@
 SECBOOT=true
 TPM=true
-REQSIG=true
\ No newline at end of file
+REQSIG=true
+MINOR=00
\ No newline at end of file
diff --git a/README.md b/README.md
index e7dceb5..009b221 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ These files allow a server to build a working image, sign it with a release key,
 
 There are a few overridable variables that control configuration elements of HalogenOS. These are set at build time, and are permanently immutable throughout the lifetime of the OS, unless the values are changed, the image is rebuilt with the same keys and URL, and the installation is updated.
 
+- `MINOR`: Default is `00`. It is a decimal number representing how many releases have been built before the current one on a given calendar day. Increment by 1 every time an image finishes building.
 - `DISTURL`: Unset by default. The URL that HalogenOS files will be served at. If it is not set, OTA updates from a server are disabled, but updating can be done manually as long as the images are signed.
 - `TPM`: Default is `true`. This will control automatic decryption of the root partition. Disable if your system does not have TPM 2.0, or if you would rather manually input your root encryption password.
 - `SECBOOT`: Default is `true`. This will control whether or not Secure Boot keys are generated and enrolled. Disable if your system does not support Secure Boot.