diff --git a/pkgs/development/libraries/glib/default.nix b/pkgs/development/libraries/glib/default.nix
index 5a498991c670..de874a798b2b 100644
--- a/pkgs/development/libraries/glib/default.nix
+++ b/pkgs/development/libraries/glib/default.nix
@@ -45,11 +45,11 @@ in
 
 stdenv.mkDerivation rec {
   pname = "glib";
-  version = "2.66.1";
+  version = "2.66.2";
 
   src = fetchurl {
     url = "mirror://gnome/sources/glib/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "0q7g70j6vjvcw4xf6bbfkm4j6mradcabdcdcy4gs5hxwkzkgysd2";
+    sha256 = "1i0pd8y6xz64qlzfj73wxyqp0x7x9j6mwf4gj6ggil4d9vnhnfgc";
   };
 
   patches = optionals stdenv.isDarwin [