diff --git a/pkgs/development/libraries/gobject-introspection/default.nix b/pkgs/development/libraries/gobject-introspection/default.nix
index 9bac8bc71a19..97b3ea9a8f10 100644
--- a/pkgs/development/libraries/gobject-introspection/default.nix
+++ b/pkgs/development/libraries/gobject-introspection/default.nix
@@ -26,7 +26,7 @@
 
 stdenv.mkDerivation rec {
   pname = "gobject-introspection";
-  version = "1.66.0";
+  version = "1.66.1";
 
   # outputs TODO: share/gobject-introspection-1.0/tests is needed during build
   # by pygobject3 (and maybe others), but it's only searched in $out
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "0q00llz0p7qik19a9fxq4bf6mqqqivkv77fqhcgqygvwxhxflrix";
+    sha256 = "078n0q7b6z682mf4irclrksm73cyixq295mqnqifl9plwmgaai6x";
   };
 
   patches = [