diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+### 2.0.34
+
++ Expose `InputStreamClass` and `SeekableIface`, see [issue 441](https://github.com/haskell-gi/haskell-gi/issues/441).
+
 ### 2.0.33
 
 + Depend on haskell-gi >= 0.26.9 (see [issue 439](https://github.com/haskell-gi/haskell-gi/issues/439))
diff --git a/Gio.overrides b/Gio.overrides
--- a/Gio.overrides
+++ b/Gio.overrides
@@ -28,6 +28,10 @@
 # versions.
 set-attr Gio/DBusNodeInfo/lookup_interface/@return-value nullable 1
 
+# These are useful to expose
+set-attr Gio/SeekableIface haskell-gi-force-visible 1
+set-attr Gio/InputStreamClass haskell-gi-force-visible 1
+
 # These are included by mistake in the introspection data of
 # glib-2.60.0, but they are linux-specific.
 # See https://github.com/haskell-gi/haskell-gi/issues/218
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-gio-2.0.33/docs/GI-Gio.html](https://hackage.haskell.org/package/gi-gio-2.0.33/docs/GI-Gio.html)
+[https://hackage.haskell.org/package/gi-gio-2.0.34/docs/GI-Gio.html](https://hackage.haskell.org/package/gi-gio-2.0.34/docs/GI-Gio.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
@@ -11,7 +11,7 @@
   where name = "Gio"
         version = "2.0"
         pkgName = "gi-gio"
-        pkgVersion = "2.0.33"
+        pkgVersion = "2.0.34"
         overridesFile = Just "Gio.overrides"
         verbose = False
         outputDir = Nothing
diff --git a/gi-gio.cabal b/gi-gio.cabal
--- a/gi-gio.cabal
+++ b/gi-gio.cabal
@@ -1,5 +1,5 @@
 name:                 gi-gio
-version:              2.0.33
+version:              2.0.34
 synopsis:             Gio bindings
 description:          Bindings for Gio, autogenerated by haskell-gi.
 homepage:             https://github.com/haskell-gi/haskell-gi
@@ -16,7 +16,7 @@
 custom-setup
       setup-depends: base >= 4.11 && < 5,
                      Cabal >= 1.24 && < 4,
-                     haskell-gi >= 0.26.9 && < 0.27,
+                     haskell-gi >= 0.26.10 && < 0.27,
                      gi-gobject == 2.0.*,
                      gi-glib == 2.0.*
 
@@ -29,7 +29,7 @@
       pkgconfig-depends: gio-2.0
       build-depends: base >= 4.7 && <5,
                      haskell-gi-base >= 0.26 && < 0.27,
-                     haskell-gi >= 0.26.9 && < 0.27,
+                     haskell-gi >= 0.26.10 && < 0.27,
                      haskell-gi-overloading < 1.1,
                      gi-gobject == 2.0.*,
                      gi-glib == 2.0.*,
@@ -226,10 +226,12 @@
                        GI.Gio.Structs.IOSchedulerJob,
                        GI.Gio.Structs.IOStreamAdapter,
                        GI.Gio.Structs.InputMessage,
+                       GI.Gio.Structs.InputStreamClass,
                        GI.Gio.Structs.InputVector,
                        GI.Gio.Structs.OutputMessage,
                        GI.Gio.Structs.OutputVector,
                        GI.Gio.Structs.Resource,
+                       GI.Gio.Structs.SeekableIface,
                        GI.Gio.Structs.SettingsSchema,
                        GI.Gio.Structs.SettingsSchemaKey,
                        GI.Gio.Structs.SettingsSchemaSource,
@@ -415,10 +417,12 @@
                        GI.Gio.Structs.IOSchedulerJob,
                        GI.Gio.Structs.IOStreamAdapter,
                        GI.Gio.Structs.InputMessage,
+                       GI.Gio.Structs.InputStreamClass,
                        GI.Gio.Structs.InputVector,
                        GI.Gio.Structs.OutputMessage,
                        GI.Gio.Structs.OutputVector,
                        GI.Gio.Structs.Resource,
+                       GI.Gio.Structs.SeekableIface,
                        GI.Gio.Structs.SettingsSchema,
                        GI.Gio.Structs.SettingsSchemaKey,
                        GI.Gio.Structs.SettingsSchemaSource,