diff --git a/gui/build.gradle b/gui/build.gradle
index 76ff53fa..378425eb 100644
--- a/gui/build.gradle
+++ b/gui/build.gradle
@@ -54,6 +54,7 @@ startScripts.doFirst {
                                     "-Xmx256M",
                                     "--add-opens", "java.base/java.lang=ALL-UNNAMED",
                                     "--add-opens", "java.base/sun.nio.fs=ALL-UNNAMED",
+                                    "--add-opens", "java.base/java.nio=ALL-UNNAMED",
                                     "--add-opens", "java.desktop/java.awt=ALL-UNNAMED",
                                     "--add-opens", "java.desktop/javax.swing=ALL-UNNAMED",
                                     "--add-opens", "java.desktop/javax.swing.plaf.basic=ALL-UNNAMED"]