diff --git a/pyproject.toml b/pyproject.toml
index ed4e82a..4a821f8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "matrixmania_marcel"
-version = "1.1.0"
+version = "0.1.1"
 description = "MatrixMania: Simple linear algebra functions for teaching (matmul, transpose, rot_2D)."
 
 authors = [