diff --git a/src/config/config.go b/src/config/config.go
index 7ab4158..69d7482 100644
--- a/src/config/config.go
+++ b/src/config/config.go
@@ -7,6 +7,9 @@ import (
 )
 
 func init() {
+	viper.SetEnvPrefix("OPENPDU_")
+	viper.AllowEmptyEnv(true)
+	viper.AutomaticEnv()
 	viper.SetConfigName("openpdu") // name of config file (without extension)
 	viper.SetConfigType("yaml")
 	viper.AddConfigPath(".")             // optionally look for config in the working directory