diff --git a/linalg/main.c b/linalg/main.c
index 6dbdbc6..5295a09 100644
--- a/linalg/main.c
+++ b/linalg/main.c
@@ -7,6 +7,7 @@
  * Simple linear algebra mat/vec operations
  *
  * TODO: Normalizations
+ * TODO: Inversion
  * TODO: Ensure suitable test coverade
  * TODO: Mat3 adjoint should use a cofactor and a transpose function
  */