diff --git a/valgrind.suppressions b/valgrind.suppressions
index 49bb8505a..9b06b3c7e 100644
--- a/valgrind.suppressions
+++ b/valgrind.suppressions
@@ -424,6 +424,46 @@
    fun:g_object_class_install_property
 }
 
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:*alloc
+   ...
+   fun:soup_*_class_intern_init
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:*alloc
+   ...
+   fun:soup_auth_manager_add_type
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:*alloc
+   ...
+   fun:soup_auth_manager_class_intern_init
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:*alloc
+   ...
+   fun:soup_auth_manager_ntlm_class_intern_init
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:*alloc
+   ...
+   fun:intern_header_name
+}
+
 {
    nss
    Memcheck:Leak