diff --git a/dev-cpp/atkmm/atkmm-2.24.2.ebuild b/dev-cpp/atkmm/atkmm-2.24.2.ebuild
index 14ce6aa138cd1..353c9ccd3e20a 100644
--- a/dev-cpp/atkmm/atkmm-2.24.2.ebuild
+++ b/dev-cpp/atkmm/atkmm-2.24.2.ebuild
@@ -7,7 +7,7 @@ GCONF_DEBUG="no"
 inherit gnome2 multilib-minimal
 
 DESCRIPTION="C++ interface for the ATK library"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+"
 SLOT="0"
diff --git a/dev-cpp/gconfmm/gconfmm-2.28.3-r1.ebuild b/dev-cpp/gconfmm/gconfmm-2.28.3-r1.ebuild
index 443acc9c1d26a..9f9202bdbd233 100644
--- a/dev-cpp/gconfmm/gconfmm-2.28.3-r1.ebuild
+++ b/dev-cpp/gconfmm/gconfmm-2.28.3-r1.ebuild
@@ -9,7 +9,7 @@ GNOME_TARBALL_SUFFIX="bz2"
 inherit flag-o-matic gnome2
 
 DESCRIPTION="C++ bindings for GConf"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1"
 SLOT="0"
diff --git a/dev-cpp/glibmm/glibmm-2.48.1.ebuild b/dev-cpp/glibmm/glibmm-2.48.1.ebuild
index 10e29d9e358aa..5a7353ef019a7 100644
--- a/dev-cpp/glibmm/glibmm-2.48.1.ebuild
+++ b/dev-cpp/glibmm/glibmm-2.48.1.ebuild
@@ -5,7 +5,7 @@ EAPI=6
 inherit eutils gnome2 multilib-minimal
 
 DESCRIPTION="C++ interface for glib2"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+ GPL-2+" # GPL-2+ applies only to the build system
 SLOT="2"
diff --git a/dev-cpp/glibmm/glibmm-2.50.0.ebuild b/dev-cpp/glibmm/glibmm-2.50.0.ebuild
index 1a268093668bd..1408d20f82bc4 100644
--- a/dev-cpp/glibmm/glibmm-2.50.0.ebuild
+++ b/dev-cpp/glibmm/glibmm-2.50.0.ebuild
@@ -5,7 +5,7 @@ EAPI=6
 inherit gnome2 multilib-minimal
 
 DESCRIPTION="C++ interface for glib2"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+ GPL-2+" # GPL-2+ applies only to the build system
 SLOT="2"
diff --git a/dev-cpp/glibmm/glibmm-2.50.1.ebuild b/dev-cpp/glibmm/glibmm-2.50.1.ebuild
index be49f0460eddf..0a27141f704a9 100644
--- a/dev-cpp/glibmm/glibmm-2.50.1.ebuild
+++ b/dev-cpp/glibmm/glibmm-2.50.1.ebuild
@@ -5,7 +5,7 @@ EAPI=6
 inherit gnome2 multilib-minimal
 
 DESCRIPTION="C++ interface for glib2"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+ GPL-2+" # GPL-2+ applies only to the build system
 SLOT="2"
diff --git a/dev-cpp/gnome-vfsmm/gnome-vfsmm-2.26.0-r1.ebuild b/dev-cpp/gnome-vfsmm/gnome-vfsmm-2.26.0-r1.ebuild
index 3978ae75a893b..91bcc03e1c4cd 100644
--- a/dev-cpp/gnome-vfsmm/gnome-vfsmm-2.26.0-r1.ebuild
+++ b/dev-cpp/gnome-vfsmm/gnome-vfsmm-2.26.0-r1.ebuild
@@ -8,7 +8,7 @@ GNOME_TARBALL_SUFFIX="bz2"
 inherit flag-o-matic gnome2
 
 DESCRIPTION="C++ bindings for gnome-vfs"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1"
 SLOT="1.1"
diff --git a/dev-cpp/gtkmm/gtkmm-2.24.5.ebuild b/dev-cpp/gtkmm/gtkmm-2.24.5.ebuild
index dacb39529a17f..107d2f1c92f47 100644
--- a/dev-cpp/gtkmm/gtkmm-2.24.5.ebuild
+++ b/dev-cpp/gtkmm/gtkmm-2.24.5.ebuild
@@ -6,7 +6,7 @@ EAPI=6
 inherit gnome2 multilib-minimal
 
 DESCRIPTION="C++ interface for GTK+"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+"
 SLOT="2.4"
diff --git a/dev-cpp/gtkmm/gtkmm-3.20.1.ebuild b/dev-cpp/gtkmm/gtkmm-3.20.1.ebuild
index e0efa906220d8..2f936cc444ce0 100644
--- a/dev-cpp/gtkmm/gtkmm-3.20.1.ebuild
+++ b/dev-cpp/gtkmm/gtkmm-3.20.1.ebuild
@@ -5,7 +5,7 @@ EAPI=6
 inherit eutils gnome2 multilib-minimal virtualx
 
 DESCRIPTION="C++ interface for GTK+"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+"
 SLOT="3.0"
diff --git a/dev-cpp/gtkmm/gtkmm-3.22.0.ebuild b/dev-cpp/gtkmm/gtkmm-3.22.0.ebuild
index 12db2f8374776..03e986e8a7eae 100644
--- a/dev-cpp/gtkmm/gtkmm-3.22.0.ebuild
+++ b/dev-cpp/gtkmm/gtkmm-3.22.0.ebuild
@@ -5,7 +5,7 @@ EAPI=6
 inherit gnome2 multilib-minimal virtualx
 
 DESCRIPTION="C++ interface for GTK+"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+"
 SLOT="3.0"
diff --git a/dev-cpp/libglademm/libglademm-2.6.7-r2.ebuild b/dev-cpp/libglademm/libglademm-2.6.7-r2.ebuild
index 3b5ddaf42cef1..5abc5d7e1edfe 100644
--- a/dev-cpp/libglademm/libglademm-2.6.7-r2.ebuild
+++ b/dev-cpp/libglademm/libglademm-2.6.7-r2.ebuild
@@ -8,7 +8,7 @@ GNOME_TARBALL_SUFFIX="bz2"
 inherit flag-o-matic gnome2 multilib-minimal
 
 DESCRIPTION="C++ bindings for libglade"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+"
 SLOT="2.4"
diff --git a/dev-cpp/libgnomecanvasmm/libgnomecanvasmm-2.26.0-r1.ebuild b/dev-cpp/libgnomecanvasmm/libgnomecanvasmm-2.26.0-r1.ebuild
index fc9a6ba88d43d..bfd924e733238 100644
--- a/dev-cpp/libgnomecanvasmm/libgnomecanvasmm-2.26.0-r1.ebuild
+++ b/dev-cpp/libgnomecanvasmm/libgnomecanvasmm-2.26.0-r1.ebuild
@@ -8,7 +8,7 @@ GNOME_TARBALL_SUFFIX="bz2"
 inherit flag-o-matic gnome2
 
 DESCRIPTION="C++ bindings for libgnomecanvas"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1"
 SLOT="2.6"
diff --git a/dev-cpp/libgnomemm/libgnomemm-2.30.0-r1.ebuild b/dev-cpp/libgnomemm/libgnomemm-2.30.0-r1.ebuild
index 66d16f41cfb25..da9ded9d53fa9 100644
--- a/dev-cpp/libgnomemm/libgnomemm-2.30.0-r1.ebuild
+++ b/dev-cpp/libgnomemm/libgnomemm-2.30.0-r1.ebuild
@@ -8,7 +8,7 @@ GNOME_TARBALL_SUFFIX="bz2"
 inherit flag-o-matic gnome2
 
 DESCRIPTION="C++ bindings for libgnome"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1"
 SLOT="2.6"
diff --git a/dev-cpp/libgnomeuimm/libgnomeuimm-2.28.0-r2.ebuild b/dev-cpp/libgnomeuimm/libgnomeuimm-2.28.0-r2.ebuild
index 4edb62c9d9793..ffc435d089474 100644
--- a/dev-cpp/libgnomeuimm/libgnomeuimm-2.28.0-r2.ebuild
+++ b/dev-cpp/libgnomeuimm/libgnomeuimm-2.28.0-r2.ebuild
@@ -8,7 +8,7 @@ GCONF_DEBUG="no"
 inherit flag-o-matic gnome2
 
 DESCRIPTION="C++ bindings for libgnomeui"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1"
 SLOT="2.6"
diff --git a/dev-cpp/mm-common/mm-common-0.9.10.ebuild b/dev-cpp/mm-common/mm-common-0.9.10.ebuild
index 4c7e21c97b106..0763a96d62e93 100644
--- a/dev-cpp/mm-common/mm-common-0.9.10.ebuild
+++ b/dev-cpp/mm-common/mm-common-0.9.10.ebuild
@@ -7,7 +7,7 @@ GCONF_DEBUG="no"
 inherit gnome2
 
 DESCRIPTION="Build infrastructure and utilities for GNOME C++ bindings"
-HOMEPAGE="http://www.gtkmm.org/"
+HOMEPAGE="https://www.gtkmm.org/"
 
 LICENSE="GPL-2"
 SLOT="0"
diff --git a/dev-cpp/pangomm/pangomm-2.40.1.ebuild b/dev-cpp/pangomm/pangomm-2.40.1.ebuild
index 118d622a2f33b..976d592d7c736 100644
--- a/dev-cpp/pangomm/pangomm-2.40.1.ebuild
+++ b/dev-cpp/pangomm/pangomm-2.40.1.ebuild
@@ -5,7 +5,7 @@ EAPI=6
 inherit gnome2 multilib-minimal
 
 DESCRIPTION="C++ interface for pango"
-HOMEPAGE="http://www.gtkmm.org"
+HOMEPAGE="https://www.gtkmm.org"
 
 LICENSE="LGPL-2.1+"
 SLOT="1.4"