diff --git a/pkgs/development/libraries/malcontent/default.nix b/pkgs/development/libraries/malcontent/default.nix
index 3371bd45e71..97cc4f7ff2a 100644
--- a/pkgs/development/libraries/malcontent/default.nix
+++ b/pkgs/development/libraries/malcontent/default.nix
@@ -19,7 +19,7 @@
 
 stdenv.mkDerivation rec {
   pname = "malcontent";
-  version = "0.8.0";
+  version = "0.9.0";
 
   outputs = [ "bin" "out" "lib" "pam" "dev" "man" "installedTests" ];
 
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     owner = "pwithnall";
     repo = pname;
     rev = version;
-    sha256 = "Y9HzysChzzmKW5PuCLm9AZ4oaBLMpB0I5NyZUOYFzm4=";
+    sha256 = "DEtibrGgHSgRjaarAzizzLN1xsJKXl+LCQ29FmpPoJo=";
   };
 
   patches = [
diff --git a/pkgs/development/libraries/malcontent/ui.nix b/pkgs/development/libraries/malcontent/ui.nix
index c69f987c70e..54382cfc0d5 100644
--- a/pkgs/development/libraries/malcontent/ui.nix
+++ b/pkgs/development/libraries/malcontent/ui.nix
@@ -11,6 +11,7 @@
 , flatpak
 , malcontent
 , gtk3
+, appstream-glib
 , desktop-file-utils
 , polkit
 , glib-testing
@@ -42,6 +43,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [
+    appstream-glib
     dbus
     polkit
     glib-testing