diff --git a/pkgs/development/libraries/poly2tri-c/default.nix b/pkgs/development/libraries/poly2tri-c/default.nix
index 1f0ee81da95..cdfd376add1 100644
--- a/pkgs/development/libraries/poly2tri-c/default.nix
+++ b/pkgs/development/libraries/poly2tri-c/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv
-, fetchFromGitHub
+, fetchFromGitLab
 , autoreconfHook
 , pkg-config
 , glib
@@ -11,9 +11,10 @@ stdenv.mkDerivation rec {
 
   outputs = [ "bin" "out" "dev" ];
 
-  src = fetchFromGitHub {
-    owner = "Mattey40";
-    repo = "poly2tri-c";
+  src = fetchFromGitLab {
+    domain = "gitlab.gnome.org";
+    owner = "jtojnar";
+    repo = pname;
     rev = "p2tc-${version}";
     sha256 = "158vm3wqfxs22b74kqc4prlvjny38qqm3kz5wrgasmx0qciwh0g8";
   };