diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -136,7 +136,7 @@
     GROUP_BASE_NAME KF
     VERSION ${KF5_VERSION}
     DEPRECATED_BASE_VERSION 0
-    DEPRECATION_VERSIONS 3.0 3.1 3.4 4.0 4.3 4.5 4.6 5.0 5.2 5.8 5.24 5.45 5.48 5.63 5.61 5.64
+    DEPRECATION_VERSIONS 3.0 3.1 3.4 4.0 4.3 4.5 4.6 5.0 5.2 5.8 5.24 5.45 5.48 5.63 5.61 5.64 5.65
 )
 # TODO: add support for EXCLUDE_DEPRECATED_BEFORE_AND_AT to all KIO libs
 # needs fixing of undeprecated API being still implemented using own deprecated API
diff --git a/src/core/ksslerroruidata.h b/src/core/ksslerroruidata.h
--- a/src/core/ksslerroruidata.h
+++ b/src/core/ksslerroruidata.h
@@ -43,10 +43,14 @@
      * Default construct an instance with no useful data.
      */
     KSslErrorUiData();
+#if KIOCORE_ENABLE_DEPRECATED_SINCE(5, 65)
     /**
      * Create an instance and initialize it with SSL error data from @p socket.
+     * @deprecated since 5.65, use QSslSocket variant
      */
+    KIOCORE_DEPRECATED_VERSION(5, 65, "Use QSslSocket variant")
     KSslErrorUiData(const KTcpSocket *socket);
+#endif
     /**
      * Create an instance and initialize it with SSL error data from @p socket.
      */