diff --git a/gnu/packages/algebra.scm b/gnu/packages/algebra.scm
index 17c9898fd3..f028507060 100644
--- a/gnu/packages/algebra.scm
+++ b/gnu/packages/algebra.scm
@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2022, 2023, 2024, 2025 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2013, 2015, 2017, 2018, 2021 Ludovic Courtès <ludo@gnu.org>
-;;; Copyright © 2016-2025 Nicolas Goaziou <mail@nicolasgoaziou.fr>
+;;; Copyright © 2016-2026 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;; Copyright © 2014, 2018 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2016, 2018, 2019, 2021, 2023 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2017, 2020-2022 Efraim Flashner <efraim@flashner.co.il>
@@ -406,7 +406,7 @@ precision.")
 (define-public giac
   (package
     (name "giac")
-    (version "2.0.0-10")
+    (version "2.0.0-21")
     (source
      (origin
        (method url-fetch)
@@ -418,7 +418,7 @@ precision.")
               "https://www-fourier.ujf-grenoble.fr/~parisse/debian/dists/"
               "stable/main/source/giac_" version ".tar.gz"))
        (sha256
-        (base32 "1lzb0jjmkg5ml1qfl0m00qqng4sxgfqwrbq10gpkp4b301k2ckv1"))))
+        (base32 "1j6bip76hhqvycapf7xy26y0b8g5zzx4gwkfsr7bf6m2h71a2zry"))))
     (build-system gnu-build-system)
     (arguments
      (list