diff --git a/CHANGES.md b/CHANGES.md
index e5f82deb977..a391490632d 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,12 @@
 Libplanet changelog
 ===================
 
+Version 3.9.3
+-------------
+
+To be released.
+
+
 Version 3.9.2
 -------------
 
diff --git a/Libplanet/Libplanet.csproj b/Libplanet/Libplanet.csproj
index bc0eecbc456..88ff8d54834 100644
--- a/Libplanet/Libplanet.csproj
+++ b/Libplanet/Libplanet.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <PackageId>Libplanet</PackageId>
     <Title>Libplanet</Title>
-    <VersionPrefix>3.9.2</VersionPrefix>
+    <VersionPrefix>3.9.3</VersionPrefix>
     <!-- Note: don't be confused by the word "prefix" here.  It's merely a
     version without suffix like "-dev.123".  See the following examples:
       Version: 1.2.3-dev.456