diff --git a/embulk-input-jdbc/src/main/java/org/embulk/input/jdbc/AbstractJdbcInputPlugin.java b/embulk-input-jdbc/src/main/java/org/embulk/input/jdbc/AbstractJdbcInputPlugin.java
index 606a3e56..444eb6cb 100644
--- a/embulk-input-jdbc/src/main/java/org/embulk/input/jdbc/AbstractJdbcInputPlugin.java
+++ b/embulk-input-jdbc/src/main/java/org/embulk/input/jdbc/AbstractJdbcInputPlugin.java
@@ -515,6 +515,7 @@ public TaskReport run(TaskSource taskSource,
             }
 
             pageBuilder.finish();
+            pageBuilder.close();
 
             // after_select runs after pageBuilder.finish because pageBuilder.finish may fail.
             // TODO Output plugin's transaction might still fail. In that case, after_select is