diff --git a/gnu/packages/algebra.scm b/gnu/packages/algebra.scm
index 35f694142e..2fca9ec86c 100644
--- a/gnu/packages/algebra.scm
+++ b/gnu/packages/algebra.scm
@@ -440,6 +440,8 @@ (define-public giac
 (define-public flint
   (package
    (name "flint")
+   ;; When updating this package, change its licence to lgpl2.1+.
+   ;; https://github.com/wbhart/flint2/issues/812
    (version "2.6.2")
    (source
     (origin