diff --git a/README.md b/README.md
index 3986a4e925c6ddfec58f9085c4e35f53daea6569..85416dd7661f6c53efac6186202f64b2c6be2d15 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
 # tg-samples
 
 Samples for the typed geometry math library.
+
+> :warning: this repository is an old version (and the last version without clean-core dependency). typed-geometry is being actively developed at https://github.com/project-arcana/typed-geometry. 
diff --git a/extern/typed-geometry b/extern/typed-geometry
index ac33ed51dbb25210c244775e226aca6192124640..d4880ba826b22056053b49f9842ae4b4d2364aef 160000
--- a/extern/typed-geometry
+++ b/extern/typed-geometry
@@ -1 +1 @@
-Subproject commit ac33ed51dbb25210c244775e226aca6192124640
+Subproject commit d4880ba826b22056053b49f9842ae4b4d2364aef