diff --git a/sci-mathematics/twelf/twelf-1.7.1-r2.ebuild b/sci-mathematics/twelf/twelf-1.7.1-r2.ebuild
index c48262362df0c..9e6c45a37143a 100644
--- a/sci-mathematics/twelf/twelf-1.7.1-r2.ebuild
+++ b/sci-mathematics/twelf/twelf-1.7.1-r2.ebuild
@@ -9,7 +9,7 @@ MY_PN="${PN}-src"
 MY_P="${MY_PN}-${PV}"
 
 DESCRIPTION="Implementation of the logical framework LF"
-HOMEPAGE="http://twelf.org/"
+HOMEPAGE="https://twelf.org/"
 SRC_URI="https://github.com/standardml/twelf/releases/download/v${PV}/${MY_P}.tar.gz"
 
 SLOT="0/${PV}"