diff --git a/pkgs/applications/audio/lash/default.nix b/pkgs/applications/audio/lash/default.nix
index da61eee3b64..9d295073597 100644
--- a/pkgs/applications/audio/lash/default.nix
+++ b/pkgs/applications/audio/lash/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation  rec {
     longDescription = ''
       Session management system for GNU/Linux audio applications.
     '';
-    homepage = http://www.nongnu.org/lash;
+    homepage = https://www.nongnu.org/lash;
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
     maintainers = [ maintainers.goibhniu ];
diff --git a/pkgs/applications/audio/lingot/default.nix b/pkgs/applications/audio/lingot/default.nix
index 389db3d548d..d2ec92e0654 100644
--- a/pkgs/applications/audio/lingot/default.nix
+++ b/pkgs/applications/audio/lingot/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Not a Guitar-Only tuner";
-    homepage = http://www.nongnu.org/lingot/;
+    homepage = https://www.nongnu.org/lingot/;
     license = stdenv.lib.licenses.gpl2Plus;
     platforms = with stdenv.lib.platforms; linux;
     maintainers = with stdenv.lib.maintainers; [viric];
diff --git a/pkgs/applications/audio/normalize/default.nix b/pkgs/applications/audio/normalize/default.nix
index a727160ff29..85c902d3839 100644
--- a/pkgs/applications/audio/normalize/default.nix
+++ b/pkgs/applications/audio/normalize/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libmad ];
 
   meta = with stdenv.lib; {
-    homepage = http://normalize.nongnu.org/;
+    homepage = https://www.nongnu.org/normalize/;
     description = "Audio file normalizer";
     license = licenses.gpl2;
     platforms = platforms.unix;
diff --git a/pkgs/applications/audio/sonata/default.nix b/pkgs/applications/audio/sonata/default.nix
index 0affe5dc89d..cc3b274d2c4 100644
--- a/pkgs/applications/audio/sonata/default.nix
+++ b/pkgs/applications/audio/sonata/default.nix
@@ -61,7 +61,7 @@ in buildPythonApplication rec {
        - Commandline control
        - Available in 24 languages
     '';
-    homepage = http://www.nongnu.org/sonata/;
+    homepage = https://www.nongnu.org/sonata/;
     license = stdenv.lib.licenses.gpl3;
     platforms = stdenv.lib.platforms.linux;
     maintainers = [ stdenv.lib.maintainers.rvl ];
diff --git a/pkgs/applications/editors/emacs-modes/bbdb/3.nix b/pkgs/applications/editors/emacs-modes/bbdb/3.nix
index 44116fbac0c..15ffece1c04 100644
--- a/pkgs/applications/editors/emacs-modes/bbdb/3.nix
+++ b/pkgs/applications/editors/emacs-modes/bbdb/3.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://savannah.nongnu.org/projects/bbdb/;
+    homepage = https://savannah.nongnu.org/projects/bbdb/;
     description = "The Insidious Big Brother Database (BBDB), a contact management utility for Emacs, version 3";
     license = "GPL";
   };
diff --git a/pkgs/applications/editors/emacs-modes/color-theme/default.nix b/pkgs/applications/editors/emacs-modes/color-theme/default.nix
index a3d76a307c7..407b9e58f0b 100644
--- a/pkgs/applications/editors/emacs-modes/color-theme/default.nix
+++ b/pkgs/applications/editors/emacs-modes/color-theme/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Emacs-lisp mode for skinning your Emacs";
-    homepage = http://www.nongnu.org/color-theme;
+    homepage = https://www.nongnu.org/color-theme;
     license = stdenv.lib.licenses.gpl2Plus;
 
     platforms = stdenv.lib.platforms.all;
diff --git a/pkgs/applications/misc/gksu/default.nix b/pkgs/applications/misc/gksu/default.nix
index 712c2081f10..4af776674e6 100644
--- a/pkgs/applications/misc/gksu/default.nix
+++ b/pkgs/applications/misc/gksu/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
       programs that need to ask a user's password to run another program
       as another user.
     '';
-    homepage = http://www.nongnu.org/gksu/;
+    homepage = https://www.nongnu.org/gksu/;
     license = stdenv.lib.licenses.gpl2;
     maintainers = [ stdenv.lib.maintainers.romildo ];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/misc/xlog/default.nix b/pkgs/applications/misc/xlog/default.nix
index 3ba7062b7bb..4f7a7c3a75a 100644
--- a/pkgs/applications/misc/xlog/default.nix
+++ b/pkgs/applications/misc/xlog/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
          location in latitude and longitude and distance and heading in kilometers or miles,
          both for short and long path. 
       '';
-    homepage = http://www.nongnu.org/xlog;
+    homepage = https://www.nongnu.org/xlog;
     maintainers = [ maintainers.mafo ];
     license = licenses.gpl3;
     platforms = platforms.unix;
diff --git a/pkgs/applications/window-managers/ratpoison/default.nix b/pkgs/applications/window-managers/ratpoison/default.nix
index fded0ee24a5..a69d3164a13 100644
--- a/pkgs/applications/window-managers/ratpoison/default.nix
+++ b/pkgs/applications/window-managers/ratpoison/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.nongnu.org/ratpoison/;
+    homepage = https://www.nongnu.org/ratpoison/;
     description = "Simple mouse-free tiling window manager";
     license = licenses.gpl2Plus;
 
diff --git a/pkgs/desktops/gnome-2/desktop/mail-notification/default.nix b/pkgs/desktops/gnome-2/desktop/mail-notification/default.nix
index 1547c364b51..ac9a87299ab 100644
--- a/pkgs/desktops/gnome-2/desktop/mail-notification/default.nix
+++ b/pkgs/desktops/gnome-2/desktop/mail-notification/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Tray status icon, which notifies us when new email arrives";
-    homepage = http://www.nongnu.org/mailnotify/;
+    homepage = https://www.nongnu.org/mailnotify/;
     license = with licenses; [ gpl3 ];
     platforms = platforms.unix;
     maintainers = [ maintainers.eleanor ];
diff --git a/pkgs/development/guile-modules/guile-lib/default.nix b/pkgs/development/guile-modules/guile-lib/default.nix
index 35eb4667bd6..c3aa8400791 100644
--- a/pkgs/development/guile-modules/guile-lib/default.nix
+++ b/pkgs/development/guile-modules/guile-lib/default.nix
@@ -37,7 +37,7 @@ in stdenv.mkDerivation {
       modules into a coherent library.  Think "a down-scaled, limited-scope CPAN
       for Guile".
     '';
-    homepage = "http://www.nongnu.org/guile-lib/";
+    homepage = "https://www.nongnu.org/guile-lib/";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ vyp ];
     platforms = platforms.gnu ++ platforms.linux;
diff --git a/pkgs/development/libraries/acl/default.nix b/pkgs/development/libraries/acl/default.nix
index f9bb982a784..f9559d94174 100644
--- a/pkgs/development/libraries/acl/default.nix
+++ b/pkgs/development/libraries/acl/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   installTargets = [ "install" "install-lib" "install-dev" ];
 
   meta = with stdenv.lib; {
-    homepage = "http://savannah.nongnu.org/projects/acl";
+    homepage = "https://savannah.nongnu.org/projects/acl";
     description = "Library and tools for manipulating access control lists";
     platforms = platforms.linux;
     license = licenses.gpl2Plus;
diff --git a/pkgs/development/libraries/attr/default.nix b/pkgs/development/libraries/attr/default.nix
index 944f33b7a3f..f859894cd47 100644
--- a/pkgs/development/libraries/attr/default.nix
+++ b/pkgs/development/libraries/attr/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = "http://savannah.nongnu.org/projects/attr/";
+    homepage = "https://savannah.nongnu.org/projects/attr/";
     description = "Library and tools for manipulating extended attributes";
     platforms = platforms.linux;
     license = licenses.gpl2Plus;
diff --git a/pkgs/development/libraries/libchop/default.nix b/pkgs/development/libraries/libchop/default.nix
index f524c940255..c802bd68ab0 100644
--- a/pkgs/development/libraries/libchop/default.nix
+++ b/pkgs/development/libraries/libchop/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   patches = [ ./gets-undeclared.patch ./size_t.patch ];
 
   nativeBuildInputs = [ pkgconfig gperf ];
-  
+
   buildInputs =
     [ zlib bzip2 lzo
       libgcrypt
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
          line.  It is written in C and has Guile (Scheme) bindings.
       '';
 
-    homepage = http://nongnu.org/libchop/;
+    homepage = https://www.nongnu.org/libchop/;
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ ];
     platforms = platforms.gnu ++ platforms.linux;
diff --git a/pkgs/development/libraries/libgksu/default.nix b/pkgs/development/libraries/libgksu/default.nix
index 0af0a1227f3..9bec00b9f52 100644
--- a/pkgs/development/libraries/libgksu/default.nix
+++ b/pkgs/development/libraries/libgksu/default.nix
@@ -79,7 +79,7 @@ stdenv.mkDerivation rec {
       user.  It provides X authentication facilities for running
       programs in an X session.
     '';
-    homepage = http://www.nongnu.org/gksu/;
+    homepage = https://www.nongnu.org/gksu/;
     license = stdenv.lib.licenses.lgpl2;
     maintainers = [ stdenv.lib.maintainers.romildo ];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/development/libraries/libnih/default.nix b/pkgs/development/libraries/libnih/default.nix
index 22eb8ed64dd..a4b0b26a345 100644
--- a/pkgs/development/libraries/libnih/default.nix
+++ b/pkgs/development/libraries/libnih/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation rec {
   name = "libnih-${version}";
 
   src = fetchurl {
-    url = "http://code.launchpad.net/libnih/1.0/${version}/+download/libnih-${version}.tar.gz";
+    url = "https://code.launchpad.net/libnih/1.0/${version}/+download/libnih-${version}.tar.gz";
     sha256 = "01glc6y7z1g726zwpvp2zm79pyb37ki729jkh45akh35fpgp4xc9";
   };
 
diff --git a/pkgs/development/libraries/libunwind/default.nix b/pkgs/development/libraries/libunwind/default.nix
index 6a32ccf5c1b..2453484cb9c 100644
--- a/pkgs/development/libraries/libunwind/default.nix
+++ b/pkgs/development/libraries/libunwind/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   doCheck = false; # fails
 
   meta = with stdenv.lib; {
-    homepage = http://www.nongnu.org/libunwind;
+    homepage = https://www.nongnu.org/libunwind;
     description = "A portable and efficient API to determine the call-chain of a program";
     maintainers = with maintainers; [ orivej ];
     platforms = platforms.linux;
diff --git a/pkgs/development/libraries/png++/default.nix b/pkgs/development/libraries/png++/default.nix
index ef4b3ea7e01..54a563c518f 100644
--- a/pkgs/development/libraries/png++/default.nix
+++ b/pkgs/development/libraries/png++/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
-    homepage = http://www.nongnu.org/pngpp/;
+    homepage = https://www.nongnu.org/pngpp/;
     description = "C++ wrapper for libpng library";
     license = licenses.bsd3;
     platforms = platforms.unix;
diff --git a/pkgs/development/misc/avr/libc/default.nix b/pkgs/development/misc/avr/libc/default.nix
index ab9a696afb0..05790a81e65 100644
--- a/pkgs/development/misc/avr/libc/default.nix
+++ b/pkgs/development/misc/avr/libc/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "a C runtime library for AVR microcontrollers";
-    homepage = http://savannah.nongnu.org/projects/avr-libc/;
+    homepage = https://savannah.nongnu.org/projects/avr-libc/;
     license = licenses.bsd3;
     platforms = [ "avr-none" ];
     maintainers = with maintainers; [ mguentner ];
diff --git a/pkgs/development/tools/guile/g-wrap/default.nix b/pkgs/development/tools/guile/g-wrap/default.nix
index 80c9ce3d432..78f2e967123 100644
--- a/pkgs/development/tools/guile/g-wrap/default.nix
+++ b/pkgs/development/tools/guile/g-wrap/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
       inter-language calls.  It currently only supports generating Guile
       wrappers for C functions.
     '';
-    homepage = "http://www.nongnu.org/g-wrap/";
+    homepage = "https://www.nongnu.org/g-wrap/";
     license = licenses.lgpl2Plus;
     maintainers = with maintainers; [ vyp ];
     platforms = platforms.linux;
diff --git a/pkgs/development/tools/java/fastjar/default.nix b/pkgs/development/tools/java/fastjar/default.nix
index f9e1d9a0842..8469b1b1272 100644
--- a/pkgs/development/tools/java/fastjar/default.nix
+++ b/pkgs/development/tools/java/fastjar/default.nix
@@ -22,7 +22,7 @@ let version = "0.98"; in
         the stock `jar' program running without a JIT.
       '';
 
-      homepage = http://savannah.nongnu.org/projects/fastjar/;
+      homepage = https://savannah.nongnu.org/projects/fastjar/;
 
       license = stdenv.lib.licenses.gpl2Plus;
       platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/development/tools/misc/avrdude/default.nix b/pkgs/development/tools/misc/avrdude/default.nix
index 4475e58207e..39f98ae0028 100644
--- a/pkgs/development/tools/misc/avrdude/default.nix
+++ b/pkgs/development/tools/misc/avrdude/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
       download/upload/manipulate the ROM and EEPROM contents of AVR
       microcontrollers using the in-system programming technique (ISP).
     '';
-    homepage = http://www.nongnu.org/avrdude/;
+    homepage = https://www.nongnu.org/avrdude/;
     license = licenses.gpl2Plus;
     platforms = with platforms; linux ++ darwin;
     maintainers = [ maintainers.bjornfor ];
diff --git a/pkgs/development/tools/misc/texi2html/default.nix b/pkgs/development/tools/misc/texi2html/default.nix
index 28eb95fd08b..b094f05e951 100644
--- a/pkgs/development/tools/misc/texi2html/default.nix
+++ b/pkgs/development/tools/misc/texi2html/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   meta = { 
     description = "Perl script which converts Texinfo source files to HTML output";
-    homepage = http://www.nongnu.org/texi2html/;
+    homepage = https://www.nongnu.org/texi2html/;
     license = stdenv.lib.licenses.gpl2;
     maintainers = [stdenv.lib.maintainers.marcweber];
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/development/tools/misc/uisp/default.nix b/pkgs/development/tools/misc/uisp/default.nix
index 6e2498bde64..1727f772006 100644
--- a/pkgs/development/tools/misc/uisp/default.nix
+++ b/pkgs/development/tools/misc/uisp/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   meta = {
     description = "Tool for AVR microcontrollers which can interface to many hardware in-system programmers";
     license = stdenv.lib.licenses.gpl2;
-    homepage = http://savannah.nongnu.org/projects/uisp;
+    homepage = https://savannah.nongnu.org/projects/uisp;
     platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/development/tools/quilt/default.nix b/pkgs/development/tools/quilt/default.nix
index fe6aeb3fa6e..7986fb2b134 100644
--- a/pkgs/development/tools/quilt/default.nix
+++ b/pkgs/development/tools/quilt/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://savannah.nongnu.org/projects/quilt;
+    homepage = https://savannah.nongnu.org/projects/quilt;
     description = "Easily manage large numbers of patches";
 
     longDescription = ''
diff --git a/pkgs/games/crack-attack/default.nix b/pkgs/games/crack-attack/default.nix
index 838bdfc9e49..bb06bec411b 100644
--- a/pkgs/games/crack-attack/default.nix
+++ b/pkgs/games/crack-attack/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "A fast-paced puzzle game inspired by the classic Super NES title Tetris Attack!";
-    homepage = http://www.nongnu.org/crack-attack/;
+    homepage = https://www.nongnu.org/crack-attack/;
     license = stdenv.lib.licenses.gpl2;
     platforms = stdenv.lib.platforms.linux;
     maintainers = [ stdenv.lib.maintainers.piotr ];
diff --git a/pkgs/os-specific/linux/dmidecode/default.nix b/pkgs/os-specific/linux/dmidecode/default.nix
index 49163cc8b79..a4ec902f762 100644
--- a/pkgs/os-specific/linux/dmidecode/default.nix
+++ b/pkgs/os-specific/linux/dmidecode/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   makeFlags = "prefix=$(out)";
 
   meta = with stdenv.lib; {
-    homepage = http://www.nongnu.org/dmidecode/;
+    homepage = https://www.nongnu.org/dmidecode/;
     description = "A tool that reads information about your system's hardware from the BIOS according to the SMBIOS/DMI standard";
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
diff --git a/pkgs/os-specific/linux/sysvinit/default.nix b/pkgs/os-specific/linux/sysvinit/default.nix
index 2e8cf0125e5..7f84e1cc9b4 100644
--- a/pkgs/os-specific/linux/sysvinit/default.nix
+++ b/pkgs/os-specific/linux/sysvinit/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation {
     '';
 
   meta = {
-    homepage = http://www.nongnu.org/sysvinit/;
+    homepage = https://www.nongnu.org/sysvinit/;
     description = "Utilities related to booting and shutdown";
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.gpl2Plus;
diff --git a/pkgs/servers/quagga/default.nix b/pkgs/servers/quagga/default.nix
index c6f150938ac..1d8f0c36cae 100644
--- a/pkgs/servers/quagga/default.nix
+++ b/pkgs/servers/quagga/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
       It is more than a routed replacement, it can be used as a Route Server and
       a Route Reflector.
     '';
-    homepage = http://www.nongnu.org/quagga/;
+    homepage = https://www.nongnu.org/quagga/;
     license = licenses.gpl2;
     platforms = platforms.unix;
     maintainers = with maintainers; [ tavyc ];
diff --git a/pkgs/tools/X11/autocutsel/default.nix b/pkgs/tools/X11/autocutsel/default.nix
index ae7daa1db10..c9bf7141804 100644
--- a/pkgs/tools/X11/autocutsel/default.nix
+++ b/pkgs/tools/X11/autocutsel/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     inherit version;
-    homepage = http://www.nongnu.org/autocutsel/;
+    homepage = https://www.nongnu.org/autocutsel/;
     description = "Tracks changes in the server's cutbuffer and CLIPBOARD selection";
     license = stdenv.lib.licenses.gpl2Plus;
     platforms = with stdenv.lib.platforms; all;
diff --git a/pkgs/tools/X11/xbindkeys/default.nix b/pkgs/tools/X11/xbindkeys/default.nix
index e633ba4f794..4e4e49bd946 100644
--- a/pkgs/tools/X11/xbindkeys/default.nix
+++ b/pkgs/tools/X11/xbindkeys/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
   buildInputs = [ libX11 guile ];
 
   meta = {
-    homepage = http://www.nongnu.org/xbindkeys/xbindkeys.html;
+    homepage = https://www.nongnu.org/xbindkeys/xbindkeys.html;
     description = "Launch shell commands with your keyboard or your mouse under X Window";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [viric];
diff --git a/pkgs/tools/archivers/atool/default.nix b/pkgs/tools/archivers/atool/default.nix
index c5a2a7ffee0..e305a1739f7 100644
--- a/pkgs/tools/archivers/atool/default.nix
+++ b/pkgs/tools/archivers/atool/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   configureScript = "${bash}/bin/bash configure";
 
   meta = {
-    homepage = http://www.nongnu.org/atool;
+    homepage = https://www.nongnu.org/atool;
     description = "Archive command line helper";
     platforms = stdenv.lib.platforms.unix;
     license = stdenv.lib.licenses.gpl3;
diff --git a/pkgs/tools/backup/duplicity/default.nix b/pkgs/tools/backup/duplicity/default.nix
index cbe02a0593e..b5accb3b82b 100644
--- a/pkgs/tools/backup/duplicity/default.nix
+++ b/pkgs/tools/backup/duplicity/default.nix
@@ -5,7 +5,7 @@ python2Packages.buildPythonApplication rec {
   version = "0.7.18.2";
 
   src = fetchurl {
-    url = "http://code.launchpad.net/duplicity/${stdenv.lib.versions.majorMinor version}-series/${version}/+download/${name}.tar.gz";
+    url = "https://code.launchpad.net/duplicity/${stdenv.lib.versions.majorMinor version}-series/${version}/+download/${name}.tar.gz";
     sha256 = "0j37dgyji36hvb5dbzlmh5rj83jwhni02yq16g6rd3hj8f7qhdn2";
   };
 
@@ -35,7 +35,7 @@ python2Packages.buildPythonApplication rec {
 
   meta = with stdenv.lib; {
     description = "Encrypted bandwidth-efficient backup using the rsync algorithm";
-    homepage = http://www.nongnu.org/duplicity;
+    homepage = https://www.nongnu.org/duplicity;
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ peti ];
     platforms = platforms.unix;
diff --git a/pkgs/tools/backup/duply/default.nix b/pkgs/tools/backup/duply/default.nix
index f11a387e5fe..2ce6f7e92e7 100644
--- a/pkgs/tools/backup/duply/default.nix
+++ b/pkgs/tools/backup/duply/default.nix
@@ -28,11 +28,11 @@ stdenv.mkDerivation rec {
     description = "Shell front end for the duplicity backup tool";
     longDescription = ''
       Duply is a shell front end for the duplicity backup tool
-      http://duplicity.nongnu.org/. It greatly simplifies it's usage by
+      https://www.nongnu.org/duplicity. It greatly simplifies its usage by
       implementing backup job profiles, batch commands and more. Who says
       secure backups on non-trusted spaces are no child's play?
     '';
-    homepage = http://duply.net/;
+    homepage = https://duply.net/;
     license = licenses.gpl2;
     maintainers = [ maintainers.bjornfor ];
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/tools/backup/store-backup/default.nix b/pkgs/tools/backup/store-backup/default.nix
index 80ff97f097d..3dbf138ed57 100644
--- a/pkgs/tools/backup/store-backup/default.nix
+++ b/pkgs/tools/backup/store-backup/default.nix
@@ -103,7 +103,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A backup suite that stores files on other disks";
-    homepage = http://savannah.nongnu.org/projects/storebackup;
+    homepage = https://savannah.nongnu.org/projects/storebackup;
     license = stdenv.lib.licenses.gpl3Plus;
     maintainers = [stdenv.lib.maintainers.marcweber];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/tools/compression/lzip/default.nix b/pkgs/tools/compression/lzip/default.nix
index 49677e98813..6b1d123a066 100644
--- a/pkgs/tools/compression/lzip/default.nix
+++ b/pkgs/tools/compression/lzip/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = {
-    homepage = http://www.nongnu.org/lzip/lzip.html;
+    homepage = https://www.nongnu.org/lzip/lzip.html;
     description = "A lossless data compressor based on the LZMA algorithm";
     license = stdenv.lib.licenses.gpl3Plus;
     platforms = stdenv.lib.platforms.all;
diff --git a/pkgs/tools/filesystems/davfs2/default.nix b/pkgs/tools/filesystems/davfs2/default.nix
index 37ee611f054..2b6d0f6e669 100644
--- a/pkgs/tools/filesystems/davfs2/default.nix
+++ b/pkgs/tools/filesystems/davfs2/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   makeFlags = ["sbindir=$(out)/sbin" "ssbindir=$(out)/sbin"];
 
   meta = {
-    homepage = http://savannah.nongnu.org/projects/davfs2;
+    homepage = https://savannah.nongnu.org/projects/davfs2;
     description = "Mount WebDAV shares like a typical filesystem";
     license = stdenv.lib.licenses.gpl3Plus;
 
diff --git a/pkgs/tools/graphics/fim/default.nix b/pkgs/tools/graphics/fim/default.nix
index 066c181f53c..7303f27fe11 100644
--- a/pkgs/tools/graphics/fim/default.nix
+++ b/pkgs/tools/graphics/fim/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
       to be a highly customizable and scriptable for users who are comfortable
       with software like the VIM text editor or the Mutt mail user agent.
     '';
-    homepage = http://www.nongnu.org/fbi-improved/;
+    homepage = https://www.nongnu.org/fbi-improved/;
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
     maintainers = with maintainers; [ primeos ];
diff --git a/pkgs/tools/graphics/icoutils/default.nix b/pkgs/tools/graphics/icoutils/default.nix
index 3ab2232e26c..b16dbe21985 100644
--- a/pkgs/tools/graphics/icoutils/default.nix
+++ b/pkgs/tools/graphics/icoutils/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://www.nongnu.org/icoutils/;
+    homepage = https://www.nongnu.org/icoutils/;
     description = "Set of programs to deal with Microsoft Windows(R) icon and cursor files";
     license = stdenv.lib.licenses.gpl3Plus;
     platforms = with stdenv.lib.platforms; linux ++ darwin;
diff --git a/pkgs/tools/inputmethods/m17n-db/default.nix b/pkgs/tools/inputmethods/m17n-db/default.nix
index dd8e96f8a6f..ba78f1ba02f 100644
--- a/pkgs/tools/inputmethods/m17n-db/default.nix
+++ b/pkgs/tools/inputmethods/m17n-db/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   ;
 
   meta = {
-    homepage = http://www.nongnu.org/m17n/;
+    homepage = https://www.nongnu.org/m17n/;
     description = "Multilingual text processing library (database)";
     license = stdenv.lib.licenses.lgpl21Plus;
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/tools/inputmethods/m17n-lib/default.nix b/pkgs/tools/inputmethods/m17n-lib/default.nix
index 12b669c8777..a4c9006cb24 100644
--- a/pkgs/tools/inputmethods/m17n-lib/default.nix
+++ b/pkgs/tools/inputmethods/m17n-lib/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ m17n_db ];
 
   meta = {
-    homepage = http://www.nongnu.org/m17n/;
+    homepage = https://www.nongnu.org/m17n/;
     description = "Multilingual text processing library (runtime)";
     license = stdenv.lib.licenses.lgpl21Plus;
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/tools/inputmethods/m17n-lib/otf.nix b/pkgs/tools/inputmethods/m17n-lib/otf.nix
index 95eea764187..05231b385db 100644
--- a/pkgs/tools/inputmethods/m17n-lib/otf.nix
+++ b/pkgs/tools/inputmethods/m17n-lib/otf.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     '';
 
   meta = {
-    homepage = http://www.nongnu.org/m17n/;
+    homepage = https://www.nongnu.org/m17n/;
     description = "Multilingual text processing library (libotf)";
     license = stdenv.lib.licenses.lgpl21Plus;
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/tools/misc/fileschanged/default.nix b/pkgs/tools/misc/fileschanged/default.nix
index f761c1ec4c5..6818bb708bb 100644
--- a/pkgs/tools/misc/fileschanged/default.nix
+++ b/pkgs/tools/misc/fileschanged/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   meta = {
-    homepage = http://www.nongnu.org/fileschanged/;
+    homepage = https://www.nongnu.org/fileschanged/;
     description = "A command-line utility that reports when files have been altered";
     license = stdenv.lib.licenses.gpl3Plus;
 
diff --git a/pkgs/tools/misc/renameutils/default.nix b/pkgs/tools/misc/renameutils/default.nix
index 8b6fec8d021..b5e5d64dda6 100644
--- a/pkgs/tools/misc/renameutils/default.nix
+++ b/pkgs/tools/misc/renameutils/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ readline ];
 
   meta = {
-    homepage = http://www.nongnu.org/renameutils/;
+    homepage = https://www.nongnu.org/renameutils/;
     description = "A set of programs to make renaming of files faster";
     platforms = stdenv.lib.platforms.unix;
     license = stdenv.lib.licenses.gpl2Plus;
diff --git a/pkgs/tools/networking/flvstreamer/default.nix b/pkgs/tools/networking/flvstreamer/default.nix
index 02d3bebcd30..b5e61bee4df 100644
--- a/pkgs/tools/networking/flvstreamer/default.nix
+++ b/pkgs/tools/networking/flvstreamer/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
     license = stdenv.lib.licenses.gpl2Plus;
 
-    homepage = http://savannah.nongnu.org/projects/flvstreamer;
+    homepage = https://savannah.nongnu.org/projects/flvstreamer;
 
     maintainers = [ stdenv.lib.maintainers.thammers ];
     platforms = with stdenv.lib.platforms; linux ++ darwin;
diff --git a/pkgs/tools/security/oath-toolkit/default.nix b/pkgs/tools/security/oath-toolkit/default.nix
index 9bd3f372672..03233917e2a 100644
--- a/pkgs/tools/security/oath-toolkit/default.nix
+++ b/pkgs/tools/security/oath-toolkit/default.nix
@@ -33,7 +33,7 @@ in stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Components for building one-time password authentication systems";
-    homepage = http://www.nongnu.org/oath-toolkit/;
+    homepage = https://www.nongnu.org/oath-toolkit/;
     platforms = with platforms; linux ++ darwin;
   };
 }
diff --git a/pkgs/tools/text/numdiff/default.nix b/pkgs/tools/text/numdiff/default.nix
index 4741fecb90c..1320f824fdf 100644
--- a/pkgs/tools/text/numdiff/default.nix
+++ b/pkgs/tools/text/numdiff/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
       line by line and field by field, ignoring small numeric differences
       or/and different numeric formats
     '';
-    homepage = http://www.nongnu.org/numdiff/;
+    homepage = https://www.nongnu.org/numdiff/;
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ ndowens ];
     platforms = platforms.gnu ++ platforms.linux;
diff --git a/pkgs/tools/typesetting/lout/default.nix b/pkgs/tools/typesetting/lout/default.nix
index 09aed52265b..85c0bacf315 100644
--- a/pkgs/tools/typesetting/lout/default.nix
+++ b/pkgs/tools/typesetting/lout/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
       "mirror://savannah/lout/${name}.tar.gz"      # new!
       "mirror://sourceforge/lout/${name}.tar.gz"   # to be phased out
       # XXX: We could add the CTAN mirrors
-      # (see http://www.ctan.org/tex-archive/support/lout/).
+      # (see https://www.ctan.org/tex-archive/support/lout/).
     ];
     sha256 = "1gb8vb1wl7ikn269dd1c7ihqhkyrwk19jwx5kd0rdvbk6g7g25ix";
   };
@@ -40,9 +40,9 @@ stdenv.mkDerivation rec {
       went back to the beginning.
     '';
 
-    # Author's page: http://www.cs.usyd.edu.au/~jeff/
-    # Wiki: http://lout.wiki.sourceforge.net/
-    homepage = http://savannah.nongnu.org/projects/lout/;
+    # Author's page: http://jeffreykingston.id.au/lout/
+    # Wiki: https://sourceforge.net/p/lout/wiki/
+    homepage = https://savannah.nongnu.org/projects/lout/;
 
     license = stdenv.lib.licenses.gpl3Plus;