diff --git a/pyproject.toml b/pyproject.toml
index 514aadb..e481fc1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ dependencies = [
     "ezdxf >= 1.0.0, < 2",
     "numpy-stl >= 3.0.0, <4",
     "ipython >= 8.0.0, <9",
-    "py-lib3mf",
+    "py-lib3mf >= 2.3.1",
     "ocpsvg",
     "trianglesolver"
 ]