diff --git a/ajatt/packages/haskell.scm b/ajatt/packages/haskell.scm
index 28e026a..85b76e1 100644
--- a/ajatt/packages/haskell.scm
+++ b/ajatt/packages/haskell.scm
@@ -524,6 +524,61 @@
    (description "Bindings for Gtk, autogenerated by haskell-gi.")
    (license license:lgpl2.1)))
 
+(define-public ghc-gi-gtksource
+  (package
+   (name "ghc-gi-gtksource")
+   (version "5.0.1")
+   (source
+    (origin
+     (method url-fetch)
+     (uri (string-append
+           "https://hackage.haskell.org/package/gi-gtksource/gi-gtksource-"
+           version
+           ".tar.gz"))
+     (sha256
+      (base32 "0s5xc3d7i2a4ysa2m5kd9qsr2g78yiqj4rfjy06n0kqsmymprvj2"))))
+   (build-system haskell-build-system)
+   (inputs
+    (list
+     ghc-haskell-gi-base
+     ghc-haskell-gi
+     ghc-haskell-gi-overloading
+     ghc-gi-cairo
+     ghc-gi-pango
+     ghc-gi-gio
+     ghc-gi-gdk
+     ghc-gi-gdkpixbuf
+     ghc-gi-graphene
+     ghc-gi-gsk
+     ghc-gi-gobject
+     ghc-gi-glib
+     ghc-gi-gtk
+     ghc-gi-atk
+     ghc-transformers
+     ghc-bytestring-builder
+     gobject-introspection
+     gtksourceview
+     gtk
+     glib))
+   (native-inputs
+    (list pkg-config
+	  gtk
+	  glib
+	  ghc-gi-glib
+	  gtksourceview
+	  gobject-introspection))
+   (arguments
+    '(#:phases
+      (modify-phases %standard-phases
+		     (add-before 'configure 'set-configure-environment-variables
+				 (lambda _
+				   (setenv "LD_LIBRARY_PATH" (getenv "LIBRARY_PATH"))
+				   #t)))))
+   (home-page "https://github.com/haskell-gi/haskell-gi")
+   (synopsis "Bindings for GtkSource")
+   (description "Bindings for GtkSource, autogenerated by haskell-gi.")
+   (license license:lgpl2.1)))
+
 (define-public ghc-gi-xlib
   (package
    (name "ghc-gi-xlib")
@@ -935,7 +990,8 @@
      ghc-transformers
      ghc-bytestring-builder
      gobject-introspection
-     ;; needs ghc-gi-grapehene and ghc-gi-gsk
+     ghc-gi-graphene
+     ghc-gi-gsk
      gtk))
    (native-inputs
     (list pkg-config
@@ -1276,5 +1332,5 @@
 
 
 
-ghc-gi-gtk
+ghc-gi-gtksource