diff --git a/README.md b/README.md
index 16be29e..2a8f1e2 100644
--- a/README.md
+++ b/README.md
@@ -370,6 +370,17 @@ REDLIB_DEFAULT_USE_HLS = "on"
 >
 > If using Docker Compose, no changes are needed as the `.env` file is already referenced in `compose.yaml` via the `env_file: .env` line.
 
+## Command Line Flags
+
+Redlib supports the following command line flags:
+
+- `-4`, `--ipv4-only`: Listen on IPv4 only.
+- `-6`, `--ipv6-only`: Listen on IPv6 only.
+- `-r`, `--redirect-https`: Redirect all HTTP requests to HTTPS (no longer functional).
+- `-a`, `--address <ADDRESS>`: Sets address to listen on. Default is `[::]`.
+- `-p`, `--port <PORT>`: Port to listen on. Default is `8080`.
+- `-H`, `--hsts <EXPIRE_TIME>`: HSTS header to tell browsers that this site should only be accessed over HTTPS. Default is `604800`.
+
 ## Instance settings
 
 Assign a default value for each instance-specific setting by passing environment variables to Redlib in the format `REDLIB_{X}`. Replace `{X}` with the setting name (see list below) in capital letters.