diff --git a/srcpkgs/giac/template b/srcpkgs/giac/template
index 282004e98fb..c6910d1d424 100644
--- a/srcpkgs/giac/template
+++ b/srcpkgs/giac/template
@@ -1,6 +1,6 @@
 # Template file for 'giac'
 pkgname=giac
-version=1.4.9r33
+version=1.4.9r45
 revision=1
 wrksrc="${pkgname}-${version/r*}"
 build_style=gnu-configure
@@ -12,7 +12,7 @@ maintainer="cr6git <quark6@protonmail.com>"
 homepage="https://www-fourier.ujf-grenoble.fr/~parisse/giac.html"
 license="GPL-3"
 distfiles="https://www-fourier.ujf-grenoble.fr/~parisse/debian/dists/stable/main/source/${pkgname}_${version/r/-}.tar.gz"
-checksum=bba6978c7a4e7678722163f2830f6dda01665673cba8d99988d9ab44890c07b8
+checksum=a83188af1013d149d28929b2008c3bdca0e859e69178948af1af896c7f2eea87
 nocross="depends on blas, blas depends on libgfortran, libgfortran cannot be cross built"
 
 post_install() {