diff --git a/Source/Libs/SourceView/SourceView.metadata b/Source/Libs/SourceView/SourceView.metadata
index ed1fea2dd..d42891890 100644
--- a/Source/Libs/SourceView/SourceView.metadata
+++ b/Source/Libs/SourceView/SourceView.metadata
@@ -14,8 +14,6 @@
   <attr path="/api/namespace/interface[@cname='GtkSourceCompletionProposal']/signal[@name='Changed']" name="name">EmitChanged</attr>
   <attr path="/api/namespace/interface[@cname='GtkSourceUndoManager']/signal[@name='CanRedoChanged']" name="name">EmitCanRedoChanged</attr>
   <attr path="/api/namespace/interface[@cname='GtkSourceUndoManager']/signal[@name='CanUndoChanged']" name="name">EmitCanUndoChanged</attr>
-  <remove-node path="/api/namespace/object[@cname='GtkSourceCompletionModel']" />
-  <add-node path="/api/namespace/interface[@cname='GtkSourceEngine']"><method name="GetType" cname="gtk_source_completion_provider_get_type" shared="true"><return-type type="GType" /></method></add-node>
   <attr path="/api/namespace/object[@cname='GtkSourceSearchContext']/method[@name='Backward']/*/*[@name='match_start']" name="pass_as">ref</attr>
   <attr path="/api/namespace/object[@cname='GtkSourceSearchContext']/method[@name='Backward']/*/*[@name='match_end']" name="pass_as">ref</attr>
   <attr path="/api/namespace/object[@cname='GtkSourceSearchContext']/method[@name='Backward']/*/*[@name='has_wrapped_around']" name="pass_as">out</attr>
@@ -42,4 +40,19 @@
   <attr path="/api/namespace/object[@cname='GtkSourceBuffer']/method[@cname='gtk_source_buffer_create_source_tag']" name="hidden">1</attr>
   <add-node path="/api"><symbol type="ownable" cname="variant" name="GLib.Variant"/></add-node>
   <attr path="/api/namespace" name="library">Library.GtkSource</attr>
+
+  <!-- Hide a few internal/private datatypes -->
+  <attr path="/api/namespace/object[@cname='GtkSourceBufferInputStream']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='GtkSourceBufferOutputStream']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='GtkSourceCompletionContainer']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='GtkSourceCompletionModel']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='GtkSourceContextEngine']" name="hidden">1</attr>
+  <attr path="/api/namespace/interface[@cname='GtkSourceEngine']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='GtkSourceGutterRendererLines']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='GtkSourceGutterRendererMarks']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='GtkSourceMarksSequence']" name="hidden">1</attr>
+  <attr path="/api/namespace/struct[@cname='GtkSourcePixbufHelper']" name="hidden">1</attr>
+  <attr path="/api/namespace/struct[@cname='GtkSourceRegex']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='GtkSourceUndoManagerDefault']" name="hidden">1</attr>
+
 </metadata>
\ No newline at end of file