diff --git a/README.md b/README.md
index 4b4db5a1..6964e98f 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,10 @@ Live example: https://status.twinnation.org/
 
 ## Usage
 
+By default, the configuration file is expected to be at `config/config.yaml`.
+
+You can specify a custom path by setting the `GATUS_CONFIG_FILE` environment variable.
+
 ```yaml
 metrics: true         # Whether to expose metrics at /metrics
 services:
diff --git a/main.go b/main.go
index 1d5db173..4fa8a725 100644
--- a/main.go
+++ b/main.go
@@ -25,10 +25,10 @@ func main() {
 }
 
 func loadConfiguration() *config.Config {
-	args := os.Args
 	var err error
-	if len(args) == 2 {
-		err = config.Load(args[1])
+	customConfigFile := os.Getenv("GATUS_CONFIG_FILE")
+	if len(customConfigFile) > 0 {
+		err = config.Load(customConfigFile)
 	} else {
 		err = config.LoadDefaultConfiguration()
 	}