diff --git a/dev-R/R6/R6-2.4.1.ebuild b/dev-R/R6/R6-2.4.1.ebuild
index cd25ab1750..4c15d39dc5 100644
--- a/dev-R/R6/R6-2.4.1.ebuild
+++ b/dev-R/R6/R6-2.4.1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="7"
@@ -6,7 +6,7 @@ EAPI="7"
 inherit R-packages-guru
 
 DESCRIPTION='Encapsulated Classes with Reference Semantics'
-SRC_URI="http://cran.r-project.org/src/contrib/R6_2.4.1.tar.gz"
+SRC_URI="mirror://cran/src/contrib/R6_2.4.1.tar.gz"
 LICENSE='MIT'
 HOMEPAGE="
 	https://r6.r-lib.org
diff --git a/dev-R/R6/R6-2.5.0.ebuild b/dev-R/R6/R6-2.5.0.ebuild
index 54e90d5fdc..9e5e39111d 100644
--- a/dev-R/R6/R6-2.5.0.ebuild
+++ b/dev-R/R6/R6-2.5.0.ebuild
@@ -6,7 +6,7 @@ EAPI="7"
 inherit R-packages-guru
 
 DESCRIPTION='Encapsulated Classes with Reference Semantics'
-SRC_URI="http://cran.r-project.org/src/contrib/${PN}_${PV}.tar.gz"
+SRC_URI="mirror://cran/src/contrib/${PN}_${PV}.tar.gz"
 LICENSE='MIT'
 HOMEPAGE="
 	https://r6.r-lib.org