diff --git a/src/main/resources/META-INF/persistence.xml b/src/main/resources/META-INF/persistence.xml
index 67280ade3ab6613b642a0a965aadf6b65a340790..aac05c71832b58091f18d4b8d41f394114340a26 100644
--- a/src/main/resources/META-INF/persistence.xml
+++ b/src/main/resources/META-INF/persistence.xml
@@ -9,6 +9,10 @@
 
         <!-- Entity classes -->
         <class>NTNU.IDATT1002.models.ImageAlbum</class>
+        <class>NTNU.IDATT1002.models.Tag</class>
+        <class>NTNU.IDATT1002.models.Metadata</class>
+        <class>NTNU.IDATT1002.models.Histogram</class>
+        <class>NTNU.IDATT1002.models.GeoLocation</class>
 
         <properties>
             <!-- Configuring JDBC properties -->