diff --git a/Directory.Build.props b/Directory.Build.props
index c95b6df16..ec7a28c36 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,5 +1,5 @@
 <Project>
     <PropertyGroup>
-        <LibplanetVersion>5.4.1</LibplanetVersion>
+        <LibplanetVersion>5.4.2</LibplanetVersion>
     </PropertyGroup>
 </Project>
diff --git a/Lib9c b/Lib9c
index af4013a61..0e0124be7 160000
--- a/Lib9c
+++ b/Lib9c
@@ -1 +1 @@
-Subproject commit af4013a61648cc178a27ca5d50a89b0f7e21c97a
+Subproject commit 0e0124be7831d85e682b534a64e16ca196c10917