diff --git a/README.md b/README.md
index a4a64d8..1839f50 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ TargetRoomID = "!jHFKHemgIAaDJekoxN:matrix-staging.ungleich.ch"
 MXID = "@fnux:matrix-staging.ungleich.ch"
 MXToken = "secretsecretsecret"
 HTTPPort = 9088
+HTTPAddress = ""
 I (master|✚1) ~/W/f/matrix-alertmanager-receiver » ./matrix-alertmanager-receiver -config config.toml
 2020/05/03 10:50:47 Reading configuration from config.toml.
 2020/05/03 10:50:47 Connecting to Matrix Homserver https://staging.matrix.ungleich.cloud as @fnux:matrix-staging.ungleich.ch.
diff --git a/config.toml.sample b/config.toml.sample
index c7613ef..85962a3 100644
--- a/config.toml.sample
+++ b/config.toml.sample
@@ -3,3 +3,4 @@ TargetRoomID = "!jHFKHemgIAaDJekoxN:matrix-staging.ungleich.ch"
 MXID = "@fnux:matrix-staging.ungleich.ch"
 MXToken = "secret"
 HTTPPort = 9088
+HTTPAddress = ""
diff --git a/main.go b/main.go
index ab64cc6..9e59c0d 100644
--- a/main.go
+++ b/main.go
@@ -23,7 +23,7 @@ type Configuration struct {
 	MXToken string
 
 	HTTPPort int
-	HTTPToken string
+	HTTPAddress string
 }
 
 func getMatrixMessageFor(alert template.Alert) gomatrix.HTMLMessage {
@@ -129,7 +129,7 @@ func main() {
 		handleIncomingHooks(w, r, matrixClient, config.TargetRoomID)
 	})
 
-	var listenAddr = fmt.Sprintf(":%v", config.HTTPPort)
+	var listenAddr = fmt.Sprintf("%v:%v", config.HTTPAddress, config.HTTPPort)
 	logger.Printf("Listening for HTTP requests (webhooks) on %v", listenAddr)
 	logger.Fatal(http.ListenAndServe(listenAddr, nil))
 }