diff --git a/model/jpa/src/main/resources/META-INF/jpa-changelog-3.3.0.xml b/model/jpa/src/main/resources/META-INF/jpa-changelog-3.3.0.xml
index c6d201e..e615a94 100644
--- a/model/jpa/src/main/resources/META-INF/jpa-changelog-3.3.0.xml
+++ b/model/jpa/src/main/resources/META-INF/jpa-changelog-3.3.0.xml
@@ -19,7 +19,9 @@
<changeSet author="keycloak" id="3.3.0">
<addColumn tableName="USER_ENTITY">
- <column name="NOT_BEFORE" type="INT" defaultValueNumeric="0"/>
+ <column name="NOT_BEFORE" type="INT" defaultValueNumeric="0">
+ <constraints nullable="false"/>
+ </column>
</addColumn>
</changeSet>