diff --git a/main.go b/main.go
index d8f399d..48c0325 100644
--- a/main.go
+++ b/main.go
@@ -68,6 +68,7 @@ func main() {
 			return
 		}
 
+		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write(response)
 	})