diff --git a/sci-libs/libdap/libdap-3.18.1.ebuild b/sci-libs/libdap/libdap-3.18.1.ebuild
index c0680c183d378..e80817b5255c1 100644
--- a/sci-libs/libdap/libdap-3.18.1.ebuild
+++ b/sci-libs/libdap/libdap-3.18.1.ebuild
@@ -6,8 +6,8 @@ EAPI=6
 inherit autotools flag-o-matic
 
 DESCRIPTION="Implementation of a C++ SDK for DAP 2.0 and 3.2"
-HOMEPAGE="http://opendap.org/"
-SRC_URI="http://www.opendap.org/pub/source/${P}.tar.gz"
+HOMEPAGE="https://www.opendap.org"
+SRC_URI="https://www.opendap.org/pub/source/${P}.tar.gz"
 
 LICENSE="|| ( LGPL-2.1 URI )"
 SLOT="0"