diff --git a/pom.xml b/pom.xml
index 5f46669d6..d8e26dbba 100644
--- a/pom.xml
+++ b/pom.xml
@@ -40,7 +40,7 @@
 
 		<!-- Main Framework -->
 		<dbflute.version>1.1.2</dbflute.version>
-		<lastaflute.version>0.9.5-RC1</lastaflute.version>
+		<lastaflute.version>0.9.5-RC2</lastaflute.version>
 		<lasta.taglib.version>0.7.1</lasta.taglib.version>
 		<lasta.job.version>0.4.5</lasta.job.version>
 		<mailflute.version>0.5.2</mailflute.version>
diff --git a/src/main/java/org/codelibs/fess/app/web/admin/backup/AdminBackupAction.java b/src/main/java/org/codelibs/fess/app/web/admin/backup/AdminBackupAction.java
index 67dc06593..4f63e01b4 100644
--- a/src/main/java/org/codelibs/fess/app/web/admin/backup/AdminBackupAction.java
+++ b/src/main/java/org/codelibs/fess/app/web/admin/backup/AdminBackupAction.java
@@ -184,7 +184,7 @@ public class AdminBackupAction extends FessAdminAction {
                     cfg.setEscapeDisabled(false);
                     cfg.setQuoteDisabled(false);
                     try (final CsvWriter writer =
-                            new CsvWriter(new BufferedWriter(new OutputStreamWriter(out.writer(), fessConfig.getCsvFileEncoding())), cfg)) {
+                            new CsvWriter(new BufferedWriter(new OutputStreamWriter(out.stream(), fessConfig.getCsvFileEncoding())), cfg)) {
                         writeCall.accept(writer);
                         writer.flush();
                     } catch (final Exception e) {