diff --git a/doma-core/src/main/java/org/seasar/doma/internal/Artifact.java b/doma-core/src/main/java/org/seasar/doma/internal/Artifact.java
index 09e385d4c..1f0ec1bfa 100644
--- a/doma-core/src/main/java/org/seasar/doma/internal/Artifact.java
+++ b/doma-core/src/main/java/org/seasar/doma/internal/Artifact.java
@@ -7,7 +7,7 @@ public final class Artifact {
 
   private static final String NAME = "Doma";
 
-  private static final String VERSION = "2.59.0";
+  private static final String VERSION = "2.59.1-SNAPSHOT";
 
   public static String getName() {
     return NAME;
diff --git a/gradle.properties b/gradle.properties
index 2f5839ede..f24704c16 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
 group=org.seasar.doma
-version=2.59.0
+version=2.59.1-SNAPSHOT
 encoding=UTF-8
 projectUrl=https://github.com/domaframework/doma
 githubUrl=git@github.com:domaframework/doma.git