diff --git a/libdiscover/backends/KNSBackend/KNSResource.cpp b/libdiscover/backends/KNSBackend/KNSResource.cpp
--- a/libdiscover/backends/KNSBackend/KNSResource.cpp
+++ b/libdiscover/backends/KNSBackend/KNSResource.cpp
@@ -232,5 +232,5 @@
 
 QDate KNSResource::releaseDate() const
 {
-    return m_entry.releaseDate();
+    return m_entry.updateReleaseDate().isNull() ? m_entry.releaseDate() : m_entry.updateReleaseDate();
 }
diff --git a/libdiscover/resources/AbstractResource.h b/libdiscover/resources/AbstractResource.h
--- a/libdiscover/resources/AbstractResource.h
+++ b/libdiscover/resources/AbstractResource.h
@@ -204,6 +204,9 @@
 
         virtual QString executeLabel() const;
         virtual QString sourceIcon() const = 0;
+        /**
+         * @returns the date of the resource's most recent release
+         */
         virtual QDate releaseDate() const = 0;
 
     public Q_SLOTS: