diff --git a/docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java b/docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java
index 12062e94..401e1f7e 100644
--- a/docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java
+++ b/docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java
@@ -34,7 +34,7 @@ public class File implements Loggable {
     /**
      * User ID.
      */
-    @Column(name = "FIL_IDUSER_C", length = 36)
+    @Column(name = "FIL_IDUSER_C", length = 36, nullable = false)
     private String userId;
     
     /**
diff --git a/docs-core/src/main/resources/config.properties b/docs-core/src/main/resources/config.properties
index 03d382c6..a8182ebd 100644
--- a/docs-core/src/main/resources/config.properties
+++ b/docs-core/src/main/resources/config.properties
@@ -1 +1 @@
-db.version=4
\ No newline at end of file
+db.version=5
\ No newline at end of file
diff --git a/docs-core/src/main/resources/db/update/dbupdate-005-0.sql b/docs-core/src/main/resources/db/update/dbupdate-005-0.sql
new file mode 100644
index 00000000..6d210ced
--- /dev/null
+++ b/docs-core/src/main/resources/db/update/dbupdate-005-0.sql
@@ -0,0 +1,2 @@
+alter table T_FILE alter column FIL_IDUSER_C set not null;
+update T_CONFIG set CFG_VALUE_C = '5' where CFG_ID_C = 'DB_VERSION';
diff --git a/docs-web/src/dev/resources/config.properties b/docs-web/src/dev/resources/config.properties
index 299540e8..680c36e5 100644
--- a/docs-web/src/dev/resources/config.properties
+++ b/docs-web/src/dev/resources/config.properties
@@ -1,3 +1,3 @@
 api.current_version=${project.version}
 api.min_version=1.0
-db.version=4
\ No newline at end of file
+db.version=5
\ No newline at end of file
diff --git a/docs-web/src/prod/resources/config.properties b/docs-web/src/prod/resources/config.properties
index 299540e8..680c36e5 100644
--- a/docs-web/src/prod/resources/config.properties
+++ b/docs-web/src/prod/resources/config.properties
@@ -1,3 +1,3 @@
 api.current_version=${project.version}
 api.min_version=1.0
-db.version=4
\ No newline at end of file
+db.version=5
\ No newline at end of file
diff --git a/docs-web/src/stress/resources/config.properties b/docs-web/src/stress/resources/config.properties
index 299540e8..680c36e5 100644
--- a/docs-web/src/stress/resources/config.properties
+++ b/docs-web/src/stress/resources/config.properties
@@ -1,3 +1,3 @@
 api.current_version=${project.version}
 api.min_version=1.0
-db.version=4
\ No newline at end of file
+db.version=5
\ No newline at end of file