diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+### 3.0.38
+
++ Update to haskell-gi(-base)-0.26
+
 ### 3.0.37
 
 + Update to haskell-gi(-base)-0.25
diff --git a/Gtk.overrides b/Gtk.overrides
--- a/Gtk.overrides
+++ b/Gtk.overrides
@@ -6,8 +6,10 @@
 # fairly weird semantics.
 ignore TreeModelFilter.set_modify_func
 
-# Signal with an (out) (caller-allocates) parameter, which we do not support.
-ignore Overlay.get-child-position
+# Signal with an (out) (caller-allocates) parameter, which we support
+# without needing annotations.
+delete-attr Gtk/Overlay/get-child-position/@parameters/allocation direction
+delete-attr Gtk/Overlay/get-child-position/@parameters/allocation caller-allocates
 
 # gtk_widget_path_iter_add_qclass isn't exported despite being present in Gtk-3.0.typelib
 # upstream issue: https://bugzilla.gnome.org/show_bug.cgi?id=761339
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Documentation
 Autogenerated documentation for this package can be found at
 
-[https://hackage.haskell.org/package/gi-gtk-3.0.37/docs/GI-Gtk.html](https://hackage.haskell.org/package/gi-gtk-3.0.37/docs/GI-Gtk.html)
+[https://hackage.haskell.org/package/gi-gtk-3.0.38/docs/GI-Gtk.html](https://hackage.haskell.org/package/gi-gtk-3.0.38/docs/GI-Gtk.html)
 
 For general documentation on using [haskell-gi](https://github.com/haskell-gi/haskell-gi) based bindings, see [the project page](https://github.com/haskell-gi/haskell-gi) or [the Wiki](https://github.com/haskell-gi/haskell-gi/wiki).
diff --git a/Setup.hs b/Setup.hs
--- a/Setup.hs
+++ b/Setup.hs
@@ -17,7 +17,7 @@
   where name = "Gtk"
         version = "3.0"
         pkgName = "gi-gtk"
-        pkgVersion = "3.0.37"
+        pkgVersion = "3.0.38"
         overridesFile = Just "Gtk.overrides"
         verbose = False
         outputDir = Nothing
diff --git a/gi-gtk.cabal b/gi-gtk.cabal
--- a/gi-gtk.cabal
+++ b/gi-gtk.cabal
@@ -1,11 +1,11 @@
 name:                 gi-gtk
-version:              3.0.37
+version:              3.0.38
 synopsis:             Gtk bindings
 description:          Bindings for Gtk, autogenerated by haskell-gi.
 homepage:             https://github.com/haskell-gi/haskell-gi
 license:              LGPL-2.1
 license-file:         LICENSE
-author:               Will Thompson, Iñaki García Etxebarria and Jonas Platte
+author:               Iñaki García Etxebarria
 maintainer:           Iñaki García Etxebarria
 category:             Bindings
 build-type:           Custom
@@ -16,7 +16,7 @@
 custom-setup
       setup-depends: base >= 4.9 && < 5,
                      Cabal >= 1.24,
-                     haskell-gi >= 0.25 && < 0.26,
+                     haskell-gi >= 0.26 && < 0.27,
                      gi-cairo == 1.0.*,
                      gi-pango == 1.0.*,
                      gi-gio == 2.0.*,
@@ -34,8 +34,8 @@
 
       pkgconfig-depends: gtk+-3.0
       build-depends: base >= 4.7 && <5,
-                     haskell-gi-base >= 0.25 && < 0.26,
-                     haskell-gi >= 0.25 && < 0.26,
+                     haskell-gi-base >= 0.26 && < 0.27,
+                     haskell-gi >= 0.26 && < 0.27,
                      haskell-gi-overloading < 1.1,
                      gi-cairo == 1.0.*,
                      gi-pango == 1.0.*,
@@ -166,6 +166,7 @@
                        GI.Gtk.Objects.FileChooserDialog,
                        GI.Gtk.Objects.FileChooserNative,
                        GI.Gtk.Objects.FileChooserWidget,
+                       GI.Gtk.Objects.FileChooserWidgetAccessible,
                        GI.Gtk.Objects.FileFilter,
                        GI.Gtk.Objects.Fixed,
                        GI.Gtk.Objects.FlowBox,
@@ -518,6 +519,7 @@
                        GI.Gtk.Objects.FileChooserDialog,
                        GI.Gtk.Objects.FileChooserNative,
                        GI.Gtk.Objects.FileChooserWidget,
+                       GI.Gtk.Objects.FileChooserWidgetAccessible,
                        GI.Gtk.Objects.FileFilter,
                        GI.Gtk.Objects.Fixed,
                        GI.Gtk.Objects.FlowBox,