diff --git a/lib/pgdump.js b/lib/pgdump.js
index 0689cd6..7743a2b 100644
--- a/lib/pgdump.js
+++ b/lib/pgdump.js
@@ -14,7 +14,7 @@ function spawnPgDump(config) {
     const env = Object.assign({}, config, {
         LD_LIBRARY_PATH: config.PGDUMP_PATH
     })
-    return spawn(pgDumpPath, ['-Fc'], {
+    return spawn(pgDumpPath, ['-Fc', '-Z 1'], {
         env
     })
 }