diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+### 5.0.1
+
++ Depend on haskell-gi >= 0.26.9 (see [issue 439](https://github.com/haskell-gi/haskell-gi/issues/439))
+
 ### 5.0.0
 
 + Initial support of GtkSourceView 5.x for GTK 4.0
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-gtksource-5.0.0/docs/GI-GtkSource.html](https://hackage.haskell.org/package/gi-gtksource-5.0.0/docs/GI-GtkSource.html)
+[https://hackage.haskell.org/package/gi-gtksource-5.0.1/docs/GI-GtkSource.html](https://hackage.haskell.org/package/gi-gtksource-5.0.1/docs/GI-GtkSource.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
@@ -16,7 +16,7 @@
   where name = "GtkSource"
         version = "5"
         pkgName = "gi-gtksource"
-        pkgVersion = "5.0.0"
+        pkgVersion = "5.0.1"
         overridesFile = Just "GtkSource.overrides"
         verbose = False
         outputDir = Nothing
diff --git a/gi-gtksource.cabal b/gi-gtksource.cabal
--- a/gi-gtksource.cabal
+++ b/gi-gtksource.cabal
@@ -1,5 +1,5 @@
 name:                 gi-gtksource
-version:              5.0.0
+version:              5.0.1
 synopsis:             GtkSource bindings
 description:          Bindings for GtkSource, 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 && < 0.27,
+                     haskell-gi >= 0.26.9 && < 0.27,
                      gi-cairo == 1.0.*,
                      gi-pango == 1.0.*,
                      gi-gtk == 4.0.*,
@@ -36,7 +36,7 @@
       pkgconfig-depends: gtksourceview-5
       build-depends: base >= 4.9 && <5,
                      haskell-gi-base >= 0.26 && < 0.27,
-                     haskell-gi >= 0.26 && < 0.27,
+                     haskell-gi >= 0.26.9 && < 0.27,
                      haskell-gi-overloading < 1.1,
                      gi-cairo == 1.0.*,
                      gi-pango == 1.0.*,