diff --git a/docs/reference/gtk/meson.build b/docs/reference/gtk/meson.build
index 6b3e5f30fa..bc0b44fbfc 100644
--- a/docs/reference/gtk/meson.build
+++ b/docs/reference/gtk/meson.build
@@ -20,13 +20,19 @@ private_headers = [
   'gtkbindingsprivate.h',
   'gtkbitmaskprivateimpl.h',
   'gtkbitmaskprivate.h',
+  'gtkbuildableprivate.h',
   'gtkbuilderprivate.h',
   'gtkbuilderscopeprivate.h',
+  'gtkbuiltiniconprivate.h',
   'gtkbuttonprivate.h',
   'gtkcellareaboxcontextprivate.h',
   'gtkcheckbuttonprivate.h',
   'gtkcolorchooserprivate.h',
   'gtkcoloreditorprivate.h',
+  'gtkcolorpickerkwinprivate.h',
+  'gtkcolorpickerportalprivate.h',
+  'gtkcolorpickerprivate.h',
+  'gtkcolorpickershellprivate.h',
   'gtkcolorplaneprivate.h',
   'gtkcolorscaleprivate.h',
   'gtkcolorswatchprivate.h',
@@ -38,6 +44,7 @@ private_headers = [
   'gtkcolumnviewsorterprivate.h',
   'gtkcolumnviewtitleprivate.h',
   'gtkcomboboxprivate.h',
+  'gtkcomposetable.h',
   'gtkconstraintexpressionprivate.h',
   'gtkconstraintguideprivate.h',
   'gtkconstraintlayoutprivate.h',
@@ -45,6 +52,7 @@ private_headers = [
   'gtkconstraintsolverprivate.h',
   'gtkconstrainttypesprivate.h',
   'gtkconstraintvflparserprivate.h',
+  'gtkcountingbloomfilterprivate.h',
   'gtkcssanimatedstyleprivate.h',
   'gtkcssanimationprivate.h',
   'gtkcssarrayvalueprivate.h',
@@ -55,6 +63,7 @@ private_headers = [
   'gtkcsscalcvalueprivate.h',
   'gtkcsscolorvalueprivate.h',
   'gtkcsscornervalueprivate.h',
+  'gtkcssdataurlprivate.h',
   'gtkcssdimensionvalueprivate.h',
   'gtkcssdynamicprivate.h',
   'gtkcsseasevalueprivate.h',
@@ -63,6 +72,7 @@ private_headers = [
   'gtkcssfontfeaturesvalueprivate.h',
   'gtkcssfontvariationsvalueprivate.h',
   'gtkcssiconthemevalueprivate.h',
+  'gtkcssimageconicprivate.h',
   'gtkcssimagecrossfadeprivate.h',
   'gtkcssimagefallbackprivate.h',
   'gtkcssimageiconthemeprivate.h',
@@ -79,6 +89,7 @@ private_headers = [
   'gtkcssinheritvalueprivate.h',
   'gtkcssinitialvalueprivate.h',
   'gtkcsskeyframesprivate.h',
+  'gtkcsslocationprivate.h',
   'gtkcsslookupprivate.h',
   'gtkcssmatcherprivate.h',
   'gtkcssnodedeclarationprivate.h',
@@ -94,6 +105,7 @@ private_headers = [
   'gtkcssrgbavalueprivate.h',
   'gtkcsssectionprivate.h',
   'gtkcssselectorprivate.h',
+  'gtkcssserializerprivate.h',
   'gtkcssshadowsvalueprivate.h',
   'gtkcssshadowvalueprivate.h',
   'gtkcssshorthandpropertyprivate.h',
@@ -102,6 +114,7 @@ private_headers = [
   'gtkcssstylechangeprivate.h',
   'gtkcssstyleprivate.h',
   'gtkcssstylepropertyprivate.h',
+  'gtkcsstokenizerprivate.h',
   'gtkcsstransformvalueprivate.h',
   'gtkcsstransientnodeprivate.h',
   'gtkcsstransitionprivate.h',
@@ -111,6 +124,9 @@ private_headers = [
   'gtkcsswidgetnodeprivate.h',
   'gtkcsswin32sizevalueprivate.h',
   'gtkdialogprivate.h',
+  'gtkdragdestprivate.h',
+  'gtkdropprivate.h',
+  'gtkemojicompletion.h',
   'gtkentryprivate.h',
   'gtkeventcontrollerlegacyprivate.h',
   'gtkeventcontrollerprivate.h',
@@ -119,6 +135,7 @@ private_headers = [
   'gtkfilechooserprivate.h',
   'gtkfilechooserwidgetprivate.h',
   'gtkfilefilterprivate.h',
+  'gtkflowboxprivate.h',
   'gtkfontchooserprivate.h',
   'gtkfontchooserwidgetprivate.h',
   'gtkgesturedragprivate.h',
@@ -142,16 +159,25 @@ private_headers = [
   'gtkiconviewprivate.h',
   'gtkimagedefinitionprivate.h',
   'gtkimageprivate.h',
+  'gtkimcontextbroadway.h',
+  'gtkimcontextime.h',
+  'gtkimcontextquartz.h',
   'gtkimcontextsimpleprivate.h',
+  'gtkimcontextsimpleseqs.h',
+  'gtkimcontextwayland.h',
   'gtkimmoduleprivate.h',
+  'gtkimmodule.h',
   'gtkintl.h',
+  'gtkistringprivate.h',
   'gtkkineticscrollingprivate.h',
   'gtklabelprivate.h',
+  'gtklayoutmanagerprivate.h',
   'gtklistbaseprivate.h',
   'gtklistitemprivate.h',
   'gtklistitemfactoryprivate.h',
   'gtklistitemmanagerprivate.h',
   'gtklistitemwidgetprivate.h',
+  'gtklistlistmodelprivate.h',
   'gtklockbuttonprivate.h',
   'gtkmagnifierprivate.h',
   'gtkmediafileprivate.h',
@@ -159,22 +185,32 @@ private_headers = [
   'gtkmenusectionboxprivate.h',
   'gtkmenutrackeritemprivate.h',
   'gtkmenutrackerprivate.h',
+  'gtkmodelbuttonprivate.h',
   'gtkmodulesprivate.h',
   'gtkmountoperationprivate.h',
   'gtknativedialogprivate.h',
+  'gtknativeprivate.h',
   'gtknomediafileprivate.h',
   'gtkpango.h',
+  'gtkpasswordentrybufferprivate.h',
+  'gtkpathbar.h',
   'gdkpixbufutilsprivate.h',
   'gtkplacessidebarprivate.h',
   'gtkplacesviewprivate.h',
   'gtkplacesviewrowprivate.h',
   'gtkpointerfocusprivate.h',
   'gtkpopcountprivate.h',
+  'gtkpopovermenubarprivate.h',
+  'gtkpopovermenuprivate.h',
   'gtkpopoverprivate.h',
+  'gtkprintbackendprivate.h',
   'gtkprinterprivate.h',
+  'gtkprintoperation-portal.h',
   'gtkprintoperation-private.h',
+  'gtkprintutils.h',
   'gtkprivate.h',
   'gtkprogresstrackerprivate.h',
+  'gtkpropertylookuplistmodelprivate.h',
   'gtkquery.h',
   'gtkrangeprivate.h',
   'gtkrbtreeprivate.h',
@@ -182,6 +218,7 @@ private_headers = [
   'gtkrenderborderprivate.h',
   'gtkrendericonprivate.h',
   'gtkrendernodepaintableprivate.h',
+  'gtkrootprivate.h',
   'gtkroundedboxprivate.h',
   'gtkscalerprivate.h',
   'gtksearchengine.h',
@@ -189,19 +226,24 @@ private_headers = [
   'gtksearchenginequartz.h',
   'gtksearchenginetracker3.h',
   'gtksearchentryprivate.h',
+  'gtksecurememoryprivate.h',
   'gtksettingsprivate.h',
+  'gtkshortcutactionprivate.h',
   'gtkshortcutcontrollerprivate.h',
+  'gtkshortcutmanagerprivate.h',
   'gtkshortcutsshortcutprivate.h',
   'gtkshortcutswindowprivate.h',
   'gtksidebarrowprivate.h',
   'gtksizegroup-private.h',
   'gtksizerequestcacheprivate.h',
   'gtksnapshotprivate.h',
+  'gtksortkeysprivate.h',
   'gtkstyleanimationprivate.h',
   'gtkstylecascadeprivate.h',
   'gtkstylecontextprivate.h',
   'gtkstylepropertyprivate.h',
   'gtkstyleproviderprivate.h',
+  'gtktestatcontextprivate.h',
   'gtktextbufferprivate.h',
   'gtktextchildprivate.h',
   'gtktextdisplayprivate.h',
@@ -211,12 +253,17 @@ private_headers = [
   'gtktextlayoutprivate.h',
   'gtktextlinedisplaycacheprivate.h',
   'gtktextmarkprivate.h',
+  'gtktextprivate.h',
+  'gtktextsegment.h',
   'gtktexttagprivate.h',
+  'gtktextutil.h',
+  'gtktextviewchildprivate.h',
   'gtktextviewprivate.h',
   'gtktogglebuttonprivate.h',
   'gtktoolbarprivate.h',
   'gtktooltipprivate.h',
   'gtktooltipwindowprivate.h',
+  'gtktreedatalist.h',
   'gtktreepopoverprivate.h',
   'gtktreeprivate.h',
   'gtktreerbtreeprivate.h',
@@ -228,14 +275,20 @@ private_headers = [
   'gtkwin32themeprivate.h',
   'gtkwindowprivate.h',
 
+  'gsettings-mapping.h',
+  'gskpango.h',
   'gtkdbusgenerated.h',
   'imm-extra.h',
+  'language-names.h',
+  'open-type-layout.h',
+  'script-names.h',
   'text-input-unstable-v3-client-protocol.h',
 
   'a11y',
   'inspector',
   'roaring',
   'timsort',
+  'tools',
 ]
 
 images = [