diff --git a/cygwin.json b/cygwin.json
index 816a7b9772..a33b296654 100644
--- a/cygwin.json
+++ b/cygwin.json
@@ -42,7 +42,7 @@
             "--root $dir\\root",
             "--site https://mirrors.kernel.org/sourceware/cygwin/"
         ],
-        "keep": "true"
+        "keep": true
     },
     "notes": "To start a Cygwin shell, type \"cygwin\"",
     "persist": [