diff --git a/codegen-test/gradle.properties b/codegen-test/gradle.properties
index 8c589d9..73c8abe 100644
--- a/codegen-test/gradle.properties
+++ b/codegen-test/gradle.properties
@@ -1,2 +1,2 @@
-domaVersion=3.8.0
+domaVersion=3.9.0
 h2Version=2.3.232
diff --git a/codegen/build.gradle.kts b/codegen/build.gradle.kts
index 029abe6..0abb6ff 100644
--- a/codegen/build.gradle.kts
+++ b/codegen/build.gradle.kts
@@ -51,7 +51,7 @@ repositories {
 
 dependencies {
     implementation("org.freemarker:freemarker:2.3.34")
-    testImplementation("org.seasar.doma:doma-core:3.8.0")
+    testImplementation("org.seasar.doma:doma-core:3.9.0")
     
     // Use JUnit BOM for version management
     testImplementation(platform("org.junit:junit-bom:5.13.0"))