diff --git a/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-matrix/default.nix b/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-matrix/default.nix
index 310d419718fe..8a15a3bdd85e 100644
--- a/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-matrix/default.nix
+++ b/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-matrix/default.nix
@@ -13,6 +13,9 @@ stdenv.mkDerivation {
     sha256 = "0ph0s24b37d1c50p8zbzgf4q2xns43a8v6vk85iz633wdd72zsa0";
   };
 
+  # glib-2.62 deprecations
+  NIX_CFLAGS_COMPILE = [ "-DGLIB_DISABLE_DEPRECATION_WARNINGS" ];
+
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ pidgin json-glib glib http-parser sqlite olm libgcrypt ];