diff --git a/resources/schema/inventory.xsd b/resources/schema/inventory.xsd
index a91d96a..336557e 100644
--- a/resources/schema/inventory.xsd
+++ b/resources/schema/inventory.xsd
@@ -210,6 +210,7 @@
     <xsd:simpleContent>
       <xsd:extension base="xsd:string">
         <xsd:attribute name="sense_id" type="xsd:int"/>
+        <xsd:attribute name="senseKey" type="xsd:string"/>
         <xsd:attribute name="type" type="xsd:string"/>
       </xsd:extension>
     </xsd:simpleContent>
diff --git a/resources/schema/monolingual_dictionaries.xsd b/resources/schema/monolingual_dictionaries.xsd
index d401149..15949bd 100644
--- a/resources/schema/monolingual_dictionaries.xsd
+++ b/resources/schema/monolingual_dictionaries.xsd
@@ -41,6 +41,7 @@
                                 <xsd:element name="exampleContainerList" type="exampleContainerListType" minOccurs="0"/>
                               </xsd:sequence>
                               <xsd:attribute name="id" type="xsd:int"/>
+                              <xsd:attribute name="key" type="xsd:string"/>
                             </xsd:complexType>
                           </xsd:element>
                         </xsd:sequence>