diff --git a/pkgs/development/python-modules/pygobject/3.nix b/pkgs/development/python-modules/pygobject/3.nix
index 373577dc4675..fda11ef89e83 100644
--- a/pkgs/development/python-modules/pygobject/3.nix
+++ b/pkgs/development/python-modules/pygobject/3.nix
@@ -17,7 +17,7 @@
 
 buildPythonPackage rec {
   pname = "pygobject";
-  version = "3.40.1";
+  version = "3.42.0";
 
   outputs = [ "out" "dev" ];
 
@@ -27,7 +27,7 @@ buildPythonPackage rec {
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "0d80g5kgf2i9cginyhalvb7ibfk9g30yilqzmcsw6h6byj8xbih0";
+    sha256 = "mxJhbjLPx5L53IQdnEcqQaNbhbpn06brQn4wem/kNns=";
   };
 
   nativeBuildInputs = [