diff --git a/srcpkgs/giac/template b/srcpkgs/giac/template
index 31b76c60d1f..310c365e28e 100644
--- a/srcpkgs/giac/template
+++ b/srcpkgs/giac/template
@@ -1,6 +1,6 @@
 # Template file for 'giac'
 pkgname=giac
-version=1.9.0.998
+version=2.0.0.1
 revision=1
 build_style=gnu-configure
 configure_args="--disable-micropy --disable-quickjs"
@@ -15,7 +15,7 @@ license="GPL-3.0-or-later"
 homepage="https://www-fourier.ujf-grenoble.fr/~parisse/giac.html"
 changelog="https://www-fourier.ujf-grenoble.fr/~parisse/install_en#new"
 distfiles="https://www-fourier.ujf-grenoble.fr/~parisse/debian/dists/stable/main/source/giac_${version%.*}-${version##*.}.tar.gz"
-checksum=7f490a56af52c18cfdb53a2370f31fe05d9e96c8456090c541c3f51e049de1e4
+checksum=2705ddd82b59a8ef2bc4f9f35d26bdae9bc590013b869b0f40c07c778165877c
 
 # need more than 4*65536 stack, see try_parse() in gen.cc line 11812
 LDFLAGS="-Wl,-z,stack-size=2097152"