diff --git a/oval-schemas/unix-definitions-schema.xsd b/oval-schemas/unix-definitions-schema.xsd
index 5bf8ef4..a1404b0 100644
--- a/oval-schemas/unix-definitions-schema.xsd
+++ b/oval-schemas/unix-definitions-schema.xsd
@@ -542,6 +542,15 @@
                         <xsd:restriction base="xsd:string">
                               <xsd:enumeration value="none"/>
                               <xsd:enumeration value="up"/>
+								<xsd:annotation>
+									<xsd:appinfo>
+										<oval:deprecated_info>
+											<oval:version>5.12.3</oval:version>
+											<oval:reason>The value of 'up' is being removed because it is unused in the language and adds unneeded complexity to OVAL Interpreters.</oval:reason>
+											<oval:comment>These values have been deprecated and will be removed in version 6.0 of the language.</oval:comment>
+										</oval:deprecated_info>
+									</xsd:appinfo>
+								</xsd:annotation>
                               <xsd:enumeration value="down"/>
                         </xsd:restriction>
                   </xsd:simpleType>
diff --git a/oval-schemas/windows-definitions-schema.xsd b/oval-schemas/windows-definitions-schema.xsd
index 59a3885..8def6ad 100644
--- a/oval-schemas/windows-definitions-schema.xsd
+++ b/oval-schemas/windows-definitions-schema.xsd
@@ -1852,6 +1852,15 @@
                         <xsd:restriction base="xsd:string">
                               <xsd:enumeration value="none"/>
                               <xsd:enumeration value="up"/>
+								<xsd:annotation>
+									<xsd:appinfo>
+										<oval:deprecated_info>
+											<oval:version>5.12.3</oval:version>
+											<oval:reason>The value of 'up' is being removed because it is unused in the language and adds unneeded complexity to OVAL Interpreters.</oval:reason>
+											<oval:comment>These values have been deprecated and will be removed in version 6.0 of the language.</oval:comment>
+										</oval:deprecated_info>
+									</xsd:appinfo>
+								</xsd:annotation>
                               <xsd:enumeration value="down"/>
                         </xsd:restriction>
                   </xsd:simpleType>