diff --git a/imageproxy.go b/imageproxy.go
index 832fa67..aafcd59 100644
--- a/imageproxy.go
+++ b/imageproxy.go
@@ -97,6 +97,11 @@ func (p *Proxy) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return // ignore favicon requests
 	}
 
+	if r.URL.Path == "/health-check" {
+		fmt.Fprint(w, "OK")
+		return
+	}
+
 	req, err := NewRequest(r, p.DefaultBaseURL)
 	if err != nil {
 		msg := fmt.Sprintf("invalid request URL: %v", err)