diff --git a/pkgs/applications/audio/gmpc/default.nix b/pkgs/applications/audio/gmpc/default.nix
index c2adc58f9ce5..099e4428016e 100644
--- a/pkgs/applications/audio/gmpc/default.nix
+++ b/pkgs/applications/audio/gmpc/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with stdenv.lib; {
-    homepage = http://gmpclient.org;
+    homepage = https://gmpclient.org;
     description = "A GTK2 frontend for Music Player Daemon";
     license = licenses.gpl2;
     maintainers = [ maintainers.rickynils ];
diff --git a/pkgs/applications/graphics/digikam/default.nix b/pkgs/applications/graphics/digikam/default.nix
index 633a1d9bd6e6..5c6a4bab9306 100644
--- a/pkgs/applications/graphics/digikam/default.nix
+++ b/pkgs/applications/graphics/digikam/default.nix
@@ -116,7 +116,7 @@ mkDerivation rec {
   meta = with lib; {
     description = "Photo Management Program";
     license = licenses.gpl2;
-    homepage = http://www.digikam.org;
+    homepage = https://www.digikam.org;
     maintainers = with maintainers; [ the-kenny ];
     platforms = platforms.linux;
   };
diff --git a/pkgs/applications/graphics/dosage/default.nix b/pkgs/applications/graphics/dosage/default.nix
index f95370e39e72..4bc0e93a3b46 100644
--- a/pkgs/applications/graphics/dosage/default.nix
+++ b/pkgs/applications/graphics/dosage/default.nix
@@ -23,6 +23,6 @@ pythonPackages.buildPythonApplication rec {
 
   meta = {
     description = "A comic strip downloader and archiver";
-    homepage = http://dosage.rocks/;
+    homepage = https://dosage.rocks/;
   };
 }
diff --git a/pkgs/applications/graphics/gimp/plugins/default.nix b/pkgs/applications/graphics/gimp/plugins/default.nix
index 01d086cc4ed4..5b21b349764b 100644
--- a/pkgs/applications/graphics/gimp/plugins/default.nix
+++ b/pkgs/applications/graphics/gimp/plugins/default.nix
@@ -43,7 +43,7 @@ rec {
     */
     name = "gap-2.6.0";
     src = fetchurl {
-      url = http://ftp.gimp.org/pub/gimp/plug-ins/v2.6/gap/gimp-gap-2.6.0.tar.bz2;
+      url = https://ftp.gimp.org/pub/gimp/plug-ins/v2.6/gap/gimp-gap-2.6.0.tar.bz2;
       sha256 = "1jic7ixcmsn4kx2cn32nc5087rk6g8xsrz022xy11yfmgvhzb0ql";
     };
     patchPhase = ''
@@ -53,7 +53,7 @@ rec {
     hardeningDisable = [ "format" ];
     meta = with stdenv.lib; {
       description = "The GIMP Animation Package";
-      homepage = http://www.gimp.org;
+      homepage = https://www.gimp.org;
       # The main code is given in GPLv3, but it has ffmpeg in it, and I think ffmpeg license
       # falls inside "free".
       license = with licenses; [ gpl3 free ];
diff --git a/pkgs/applications/misc/chirp/default.nix b/pkgs/applications/misc/chirp/default.nix
index 22d659dd10e4..b8fc63c2c9ed 100644
--- a/pkgs/applications/misc/chirp/default.nix
+++ b/pkgs/applications/misc/chirp/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation rec {
   version = "20180412";
 
   src = fetchurl {
-    url = "http://trac.chirp.danplanet.com/chirp_daily/daily-${version}/${name}.tar.gz";
+    url = "https://trac.chirp.danplanet.com/chirp_daily/daily-${version}/${name}.tar.gz";
     sha256 = "17wpxqzifz6grw9xzg9q9vr58vm2xd50fhd64c3ngdhxcnq2dpj9";
   };
 
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A free, open-source tool for programming your amateur radio";
-    homepage = http://chirp.danplanet.com/;
+    homepage = https://chirp.danplanet.com/;
     license = licenses.gpl3;
     platforms = platforms.linux;
     maintainers = [ maintainers.the-kenny ];
diff --git a/pkgs/applications/misc/gramps/default.nix b/pkgs/applications/misc/gramps/default.nix
index 5f219dc4752c..50f575d15cec 100644
--- a/pkgs/applications/misc/gramps/default.nix
+++ b/pkgs/applications/misc/gramps/default.nix
@@ -51,7 +51,7 @@ in buildPythonApplication rec {
 
   meta = with stdenv.lib; {
     description = "Genealogy software";
-    homepage = http://gramps-project.org;
+    homepage = https://gramps-project.org;
     license = licenses.gpl2;
   };
 }
diff --git a/pkgs/applications/misc/lilyterm/default.nix b/pkgs/applications/misc/lilyterm/default.nix
index 36527cdbe7c3..662ca9761fb2 100644
--- a/pkgs/applications/misc/lilyterm/default.nix
+++ b/pkgs/applications/misc/lilyterm/default.nix
@@ -15,7 +15,7 @@ let
     then rec {
         version = "0.9.9.4";
         src = fetchurl {
-          url = "http://lilyterm.luna.com.tw/file/lilyterm-${version}.tar.gz";
+          url = "https://lilyterm.luna.com.tw/file/lilyterm-${version}.tar.gz";
           sha256 = "0x2x59qsxq6d6xg5sd5lxbsbwsdvkwqlk17iw3h4amjg3m1jc9mp";
         };
       }
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     longDescription = ''
       LilyTerm is a terminal emulator based off of libvte that aims to be fast and lightweight.
     '';
-    homepage = http://lilyterm.luna.com.tw/;
+    homepage = https://lilyterm.luna.com.tw/;
     license = licenses.gpl3;
     maintainers = with maintainers; [ AndersonTorres Profpatsch ];
     platforms = platforms.linux;
diff --git a/pkgs/applications/networking/cluster/kubernetes/default.nix b/pkgs/applications/networking/cluster/kubernetes/default.nix
index 2b5554353270..1a7ba3cf93df 100644
--- a/pkgs/applications/networking/cluster/kubernetes/default.nix
+++ b/pkgs/applications/networking/cluster/kubernetes/default.nix
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "Production-Grade Container Scheduling and Management";
     license = licenses.asl20;
-    homepage = http://kubernetes.io;
+    homepage = https://kubernetes.io;
     maintainers = with maintainers; [offline];
     platforms = platforms.unix;
   };
diff --git a/pkgs/applications/networking/ids/snort/default.nix b/pkgs/applications/networking/ids/snort/default.nix
index e3a917a12eb3..ff19a62ef306 100644
--- a/pkgs/applications/networking/ids/snort/default.nix
+++ b/pkgs/applications/networking/ids/snort/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   
   meta = {
     description = "Network intrusion prevention and detection system (IDS/IPS)";
-    homepage = http://www.snort.org;
+    homepage = https://www.snort.org;
     maintainers = with stdenv.lib.maintainers; [ aycanirican ];
     license = stdenv.lib.licenses.gpl2;
     platforms = with stdenv.lib.platforms; linux;
diff --git a/pkgs/applications/networking/instant-messengers/franz/default.nix b/pkgs/applications/networking/instant-messengers/franz/default.nix
index c2e6528e637e..95e01e586ec2 100644
--- a/pkgs/applications/networking/instant-messengers/franz/default.nix
+++ b/pkgs/applications/networking/instant-messengers/franz/default.nix
@@ -66,7 +66,7 @@ in stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A free messaging app that combines chat & messaging services into one application";
-    homepage = http://meetfranz.com;
+    homepage = https://meetfranz.com;
     license = licenses.free;
     maintainers = [ maintainers.gnidorah ];
     platforms = ["i686-linux" "x86_64-linux"];
diff --git a/pkgs/applications/networking/irc/irssi/default.nix b/pkgs/applications/networking/irc/irssi/default.nix
index b03673a00b66..b5bab3585c5f 100644
--- a/pkgs/applications/networking/irc/irssi/default.nix
+++ b/pkgs/applications/networking/irc/irssi/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = {
-    homepage    = http://irssi.org;
+    homepage    = https://irssi.org;
     description = "A terminal based IRC client";
     platforms   = stdenv.lib.platforms.unix;
     maintainers = with stdenv.lib.maintainers; [ lovek323 ];
diff --git a/pkgs/applications/video/mpv/default.nix b/pkgs/applications/video/mpv/default.nix
index 421e0dbb8a39..aa17cf183e34 100644
--- a/pkgs/applications/video/mpv/default.nix
+++ b/pkgs/applications/video/mpv/default.nix
@@ -77,7 +77,7 @@ let
   # for purity reasons this behavior should be avoided.
   wafVersion = "1.9.15";
   waf = fetchurl {
-    urls = [ "http://waf.io/waf-${wafVersion}"
+    urls = [ "https://waf.io/waf-${wafVersion}"
              "http://www.freehackers.org/~tnagy/release/waf-${wafVersion}" ];
     sha256 = "0qrnlv91cb0v221w8a0fi4wxm99q2hpz10rkyyk4akcsvww6xrw5";
   };
@@ -200,7 +200,7 @@ in stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A media player that supports many video formats (MPlayer and mplayer2 fork)";
-    homepage = http://mpv.io;
+    homepage = https://mpv.io;
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ AndersonTorres fuuzetsu fpletz ];
     platforms = platforms.darwin ++ platforms.linux;
diff --git a/pkgs/applications/window-managers/i3/default.nix b/pkgs/applications/window-managers/i3/default.nix
index 46c87b0b189e..986639c947b0 100644
--- a/pkgs/applications/window-managers/i3/default.nix
+++ b/pkgs/applications/window-managers/i3/default.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A tiling window manager";
-    homepage    = "http://i3wm.org";
+    homepage    = "https://i3wm.org";
     maintainers = with maintainers; [ garbas modulistic fpletz ];
     license     = licenses.bsd3;
     platforms   = platforms.all;
diff --git a/pkgs/applications/window-managers/i3/status.nix b/pkgs/applications/window-managers/i3/status.nix
index b54f6e8def33..fa964e86974b 100644
--- a/pkgs/applications/window-managers/i3/status.nix
+++ b/pkgs/applications/window-managers/i3/status.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A tiling window manager";
-    homepage = http://i3wm.org;
+    homepage = https://i3wm.org;
     maintainers = [ stdenv.lib.maintainers.garbas ];
     license = stdenv.lib.licenses.bsd3;
     platforms = stdenv.lib.platforms.all;
diff --git a/pkgs/desktops/gnome-3/core/gnome-menus/default.nix b/pkgs/desktops/gnome-3/core/gnome-menus/default.nix
index fdd23d134599..8a316b60f025 100644
--- a/pkgs/desktops/gnome-3/core/gnome-menus/default.nix
+++ b/pkgs/desktops/gnome-3/core/gnome-menus/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ intltool glib gobjectIntrospection ];
 
   meta = {
-    homepage = http://www.gnome.org;
+    homepage = https://www.gnome.org;
     description = "Gnome menu specification";
 
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/development/compilers/hhvm/default.nix b/pkgs/development/compilers/hhvm/default.nix
index 1cb28118ccbe..749e4125a0b3 100644
--- a/pkgs/development/compilers/hhvm/default.nix
+++ b/pkgs/development/compilers/hhvm/default.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "High-performance JIT compiler for PHP/Hack";
-    homepage    = "http://hhvm.com";
+    homepage    = "https://hhvm.com";
     license     = "PHP/Zend";
     platforms   = [ "x86_64-linux" ];
     maintainers = [ stdenv.lib.maintainers.thoughtpolice ];
diff --git a/pkgs/development/libraries/LASzip/default.nix b/pkgs/development/libraries/LASzip/default.nix
index 384178d2c8df..4a166242eb3a 100644
--- a/pkgs/development/libraries/LASzip/default.nix
+++ b/pkgs/development/libraries/LASzip/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Turn quickly bulky LAS files into compact LAZ files without information loss";
-    homepage = http://www.laszip.org;
+    homepage = https://www.laszip.org;
     license = stdenv.lib.licenses.lgpl2;
     maintainers = [ stdenv.lib.maintainers.michelk ];
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/development/libraries/fcppt/default.nix b/pkgs/development/libraries/fcppt/default.nix
index c4332df5a3db..660cdfa6414b 100644
--- a/pkgs/development/libraries/fcppt/default.nix
+++ b/pkgs/development/libraries/fcppt/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
       programming (which is both efficient and syntactically affordable in
       C++11).
     '';
-    homepage = http://fcppt.org;
+    homepage = https://fcppt.org;
     license = licenses.boost;
     maintainers = with maintainers; [ pmiddend ];
     platforms = platforms.linux;
diff --git a/pkgs/development/libraries/libLAS/default.nix b/pkgs/development/libraries/libLAS/default.nix
index 272a9774a7f4..1e7720b0656a 100644
--- a/pkgs/development/libraries/libLAS/default.nix
+++ b/pkgs/development/libraries/libLAS/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "LAS 1.0/1.1/1.2 ASPRS LiDAR data translation toolset";
-    homepage = http://www.liblas.org;
+    homepage = https://www.liblas.org;
     license = stdenv.lib.licenses.bsd3;
     platforms = stdenv.lib.platforms.unix;
     maintainers = [ stdenv.lib.maintainers.michelk ];
diff --git a/pkgs/development/libraries/libdbusmenu-qt/qt-5.5.nix b/pkgs/development/libraries/libdbusmenu-qt/qt-5.5.nix
index 75cf69035cbe..9c25757efb03 100644
--- a/pkgs/development/libraries/libdbusmenu-qt/qt-5.5.nix
+++ b/pkgs/development/libraries/libdbusmenu-qt/qt-5.5.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "libdbusmenu-qt-0.9.3+14";
 
   src = fetchbzr {
-    url = "http://bazaar.launchpad.net/~dbusmenu-team/libdbusmenu-qt/trunk";
+    url = "https://bazaar.launchpad.net/~dbusmenu-team/libdbusmenu-qt/trunk";
     rev = "ps-jenkins@lists.canonical.com-20140619090718-mppiiax5atpnb8i2";
     sha256 = "1dbhaljyivbv3wc184zpjfjmn24zb6aj72wgg1gg1xl5f783issd";
   };
diff --git a/pkgs/development/libraries/libmsgpack/generic.nix b/pkgs/development/libraries/libmsgpack/generic.nix
index 7bca8f21c6b9..889ef1347732 100644
--- a/pkgs/development/libraries/libmsgpack/generic.nix
+++ b/pkgs/development/libraries/libmsgpack/generic.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "MessagePack implementation for C and C++";
-    homepage    = http://msgpack.org;
+    homepage    = https://msgpack.org;
     license     = licenses.asl20;
     maintainers = with maintainers; [ redbaron wkennington ];
     platforms   = platforms.all;
diff --git a/pkgs/development/libraries/liboil/default.nix b/pkgs/development/libraries/liboil/default.nix
index a8d2953cad00..fb2dad605252 100644
--- a/pkgs/development/libraries/liboil/default.nix
+++ b/pkgs/development/libraries/liboil/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A library of simple functions that are optimized for various CPUs";
-    homepage    = http://liboil.freedesktop.org;
+    homepage    = https://liboil.freedesktop.org;
     license     = licenses.bsd2;
     maintainers = with maintainers; [ lovek323 ];
     platforms   = platforms.all;
diff --git a/pkgs/development/libraries/libssh2/default.nix b/pkgs/development/libraries/libssh2/default.nix
index 4d754dc80866..a09a76707390 100644
--- a/pkgs/development/libraries/libssh2/default.nix
+++ b/pkgs/development/libraries/libssh2/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A client-side C library implementing the SSH2 protocol";
-    homepage = http://www.libssh2.org;
+    homepage = https://www.libssh2.org;
     platforms = stdenv.lib.platforms.all;
     maintainers = [ ];
   };
diff --git a/pkgs/development/libraries/movit/default.nix b/pkgs/development/libraries/movit/default.nix
index 3766140eea1e..b5188cb66d29 100644
--- a/pkgs/development/libraries/movit/default.nix
+++ b/pkgs/development/libraries/movit/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "High-performance, high-quality video filters for the GPU";
-    homepage = http://movit.sesse.net;
+    homepage = https://movit.sesse.net;
     license = licenses.gpl2Plus;
     maintainers = [ maintainers.goibhniu ];
     platforms = platforms.linux;
diff --git a/pkgs/development/tools/analysis/include-what-you-use/default.nix b/pkgs/development/tools/analysis/include-what-you-use/default.nix
index ec4d19423e6d..9aac638d0a80 100644
--- a/pkgs/development/tools/analysis/include-what-you-use/default.nix
+++ b/pkgs/development/tools/analysis/include-what-you-use/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
       actually needed for this file (for both .cc and .h files), and by
       replacing #includes with forward-declares when possible.
     '';
-    homepage = http://include-what-you-use.org;
+    homepage = https://include-what-you-use.org;
     license = licenses.bsd3;
     platforms = platforms.unix;
   };
diff --git a/pkgs/development/tools/build-managers/cmake/2.8.nix b/pkgs/development/tools/build-managers/cmake/2.8.nix
index 5fcd6b341653..e014276cd670 100644
--- a/pkgs/development/tools/build-managers/cmake/2.8.nix
+++ b/pkgs/development/tools/build-managers/cmake/2.8.nix
@@ -28,16 +28,16 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   patches =
-    [(fetchpatch { # see http://www.cmake.org/Bug/view.php?id=13959
+    [(fetchpatch { # see https://www.cmake.org/Bug/view.php?id=13959
       name = "FindFreetype-2.5.patch";
-      url = "http://www.cmake.org/Bug/file_download.php?file_id=4660&type=bug";
+      url = "https://www.cmake.org/Bug/file_download.php?file_id=4660&type=bug";
       sha256 = "136z63ff83hnwd247cq4m8m8164pklzyl5i2csf5h6wd8p01pdkj";
     })] ++
     # Don't search in non-Nix locations such as /usr, but do search in our libc.
     [ ./search-path.patch ] ++
     optional (hostPlatform != buildPlatform) (fetchurl {
       name = "fix-darwin-cross-compile.patch";
-      url = "http://public.kitware.com/Bug/file_download.php?"
+      url = "https://public.kitware.com/Bug/file_download.php?"
           + "file_id=4981&type=bug";
       sha256 = "16acmdr27adma7gs9rs0dxdiqppm15vl3vv3agy7y8s94wyh4ybv";
     });
@@ -78,7 +78,7 @@ stdenv.mkDerivation rec {
     '';
 
   meta = {
-    homepage = http://www.cmake.org/;
+    homepage = https://cmake.org;
     description = "Cross-Platform Makefile Generator";
     platforms = if useQt4 then qt4.meta.platforms else stdenv.lib.platforms.unix;
     maintainers = with stdenv.lib.maintainers; [ ];
diff --git a/pkgs/development/tools/castxml/default.nix b/pkgs/development/tools/castxml/default.nix
index f8389786b9da..f42adffc5f42 100644
--- a/pkgs/development/tools/castxml/default.nix
+++ b/pkgs/development/tools/castxml/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.kitware.com;
+    homepage = https://www.kitware.com;
     license = licenses.asl20;
     description = "Abstract syntax tree XML output tool";
     platforms = platforms.unix;
diff --git a/pkgs/development/tools/gauge/default.nix b/pkgs/development/tools/gauge/default.nix
index 58bc24e1ec64..12152e988669 100644
--- a/pkgs/development/tools/gauge/default.nix
+++ b/pkgs/development/tools/gauge/default.nix
@@ -16,7 +16,7 @@ buildGoPackage rec {
 
   meta = with stdenv.lib; {
    description = "Light weight cross-platform test automation";
-   homepage    = http://gauge.org;
+   homepage    = https://gauge.org;
    license     = licenses.gpl3;
    maintainers = [ maintainers.vdemeester ];
    platforms   = platforms.unix;
diff --git a/pkgs/games/assaultcube/default.nix b/pkgs/games/assaultcube/default.nix
index cef48978b6d0..6f742bb64f79 100644
--- a/pkgs/games/assaultcube/default.nix
+++ b/pkgs/games/assaultcube/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Fast and fun first-person-shooter based on the Cube fps";
-    homepage = http://assault.cubers.net;
+    homepage = https://assault.cubers.net;
     maintainers = [ maintainers.genesis ];
     platforms = platforms.linux; # should work on darwin with a little effort.
     license = stdenv.lib.licenses.zlib;
diff --git a/pkgs/misc/emulators/emulationstation/default.nix b/pkgs/misc/emulators/emulationstation/default.nix
index 16cb7af3d600..9dec1ecacae0 100644
--- a/pkgs/misc/emulators/emulationstation/default.nix
+++ b/pkgs/misc/emulators/emulationstation/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A flexible emulator front-end supporting keyboardless navigation and custom system themes";
-    homepage = http://emulationstation.org;
+    homepage = https://emulationstation.org;
     maintainers = [ stdenv.lib.maintainers.edwtjo ];
     license = stdenv.lib.licenses.mit;
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/servers/firebird/default.nix b/pkgs/servers/firebird/default.nix
index da54936092b3..24ed1dffd4d8 100644
--- a/pkgs/servers/firebird/default.nix
+++ b/pkgs/servers/firebird/default.nix
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "SQL relational database management system";
-    homepage = http://www.firebirdnews.org;
+    homepage = https://www.firebirdnews.org;
     license = ["IDPL" "Interbase-1.0"];
     maintainers = [stdenv.lib.maintainers.marcweber];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/servers/xmpp/ejabberd/default.nix b/pkgs/servers/xmpp/ejabberd/default.nix
index f95b5efe3d38..6a0bedeab260 100644
--- a/pkgs/servers/xmpp/ejabberd/default.nix
+++ b/pkgs/servers/xmpp/ejabberd/default.nix
@@ -28,7 +28,7 @@ in stdenv.mkDerivation rec {
   name = "ejabberd-${version}";
 
   src = fetchurl {
-    url = "http://www.process-one.net/downloads/ejabberd/${version}/${name}.tgz";
+    url = "https://www.process-one.net/downloads/ejabberd/${version}/${name}.tgz";
     sha256 = "01i2n8mlgw293jdf4172f9q8ca8m35vysjws791p7nynpfdb4cn6";
   };
 
@@ -111,7 +111,7 @@ in stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Open-source XMPP application server written in Erlang";
     license = licenses.gpl2;
-    homepage = http://www.ejabberd.im;
+    homepage = https://www.ejabberd.im;
     platforms = platforms.linux;
     maintainers = with maintainers; [ sander abbradar ];
     broken = withElixir;
diff --git a/pkgs/tools/backup/burp/default.nix b/pkgs/tools/backup/burp/default.nix
index c079d8272b12..4133478dbf98 100644
--- a/pkgs/tools/backup/burp/default.nix
+++ b/pkgs/tools/backup/burp/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "BURP - BackUp and Restore Program";
-    homepage    = http://burp.grke.org;
+    homepage    = https://burp.grke.org;
     license     = licenses.agpl3;
     maintainers = with maintainers; [ tokudan ];
     platforms   = platforms.all;
diff --git a/pkgs/tools/filesystems/bindfs/default.nix b/pkgs/tools/filesystems/bindfs/default.nix
index a83ee771d699..1499e81b624e 100644
--- a/pkgs/tools/filesystems/bindfs/default.nix
+++ b/pkgs/tools/filesystems/bindfs/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A FUSE filesystem for mounting a directory to another location";
-    homepage    = http://bindfs.org;
+    homepage    = https://bindfs.org;
     license     = stdenv.lib.licenses.gpl2;
     maintainers = with stdenv.lib.maintainers; [ lovek323 ];
     platforms   = stdenv.lib.platforms.unix;
diff --git a/pkgs/tools/filesystems/irods/common.nix b/pkgs/tools/filesystems/irods/common.nix
index c7267aca1071..902d7d7d1a1e 100644
--- a/pkgs/tools/filesystems/irods/common.nix
+++ b/pkgs/tools/filesystems/irods/common.nix
@@ -47,7 +47,7 @@ with stdenv;
       important in data management. The development infrastructure supports exhaustive
       testing on supported platforms; plug-in support for microservices, storage resources,
       drivers, and databases; and extensive documentation, training and support services.'';
-    homepage = http://irods.org;
+    homepage = https://irods.org;
     license = stdenv.lib.licenses.bsd3;
     maintainers = [ stdenv.lib.maintainers.bzizou ];
     platforms = stdenv.lib.platforms.all;
diff --git a/pkgs/tools/misc/gparted/default.nix b/pkgs/tools/misc/gparted/default.nix
index 451bcae1efd1..ca078c16ab6b 100644
--- a/pkgs/tools/misc/gparted/default.nix
+++ b/pkgs/tools/misc/gparted/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
       partitions. GParted enables you to change the partition organization
       while preserving the partition contents.
     '';
-    homepage = http://gparted.org;
+    homepage = https://gparted.org;
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
   };
diff --git a/pkgs/tools/networking/easyrsa/2.x.nix b/pkgs/tools/networking/easyrsa/2.x.nix
index b33034515fb6..3c6c5f3d2992 100644
--- a/pkgs/tools/networking/easyrsa/2.x.nix
+++ b/pkgs/tools/networking/easyrsa/2.x.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Simple shell based CA utility";
-    homepage = http://openvpn.net/;
+    homepage = https://openvpn.net/;
     license = licenses.gpl2;
     maintainers = [ maintainers.offline ];
     platforms = platforms.linux;
diff --git a/pkgs/tools/networking/easyrsa/default.nix b/pkgs/tools/networking/easyrsa/default.nix
index 59d97a4a18b6..fcc6c1d86bdf 100644
--- a/pkgs/tools/networking/easyrsa/default.nix
+++ b/pkgs/tools/networking/easyrsa/default.nix
@@ -32,7 +32,7 @@ in stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Simple shell based CA utility";
-    homepage = http://openvpn.net/;
+    homepage = https://openvpn.net/;
     license = licenses.gpl2;
     maintainers = [ maintainers.offline ];
     platforms = platforms.linux;
diff --git a/pkgs/tools/networking/openvpn/default.nix b/pkgs/tools/networking/openvpn/default.nix
index d96652e456df..358c53f453bb 100644
--- a/pkgs/tools/networking/openvpn/default.nix
+++ b/pkgs/tools/networking/openvpn/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   version = "2.4.6";
 
   src = fetchurl {
-    url = "http://swupdate.openvpn.net/community/releases/${name}.tar.xz";
+    url = "https://swupdate.openvpn.net/community/releases/${name}.tar.xz";
     sha256 = "09lck4wmkas3iyrzaspin9gn3wiclqb1m9sf8diy7j8wakx38r2g";
   };
 
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A robust and highly flexible tunneling application";
-    homepage = http://openvpn.net/;
+    homepage = https://openvpn.net/;
     downloadPage = "https://openvpn.net/index.php/open-source/downloads.html";
     license = stdenv.lib.licenses.gpl2;
     maintainers = [ stdenv.lib.maintainers.viric ];
diff --git a/pkgs/tools/security/clamav/default.nix b/pkgs/tools/security/clamav/default.nix
index 8c12e4e30c3e..c3aa92bf4b01 100644
--- a/pkgs/tools/security/clamav/default.nix
+++ b/pkgs/tools/security/clamav/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.clamav.net;
+    homepage = https://www.clamav.net;
     description = "Antivirus engine designed for detecting Trojans, viruses, malware and other malicious threats";
     license = licenses.gpl2;
     maintainers = with maintainers; [ phreedom robberer qknight fpletz ];
diff --git a/pkgs/tools/security/mpw/default.nix b/pkgs/tools/security/mpw/default.nix
index 3e1e3a882839..0994c649c83e 100644
--- a/pkgs/tools/security/mpw/default.nix
+++ b/pkgs/tools/security/mpw/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://masterpasswordapp.com/;
+    homepage = https://masterpasswordapp.com/;
     description = "A stateless password management solution";
     license = licenses.gpl3;
     platforms = platforms.unix;