diff --git a/pkgs/by-name/da/dash/package.nix b/pkgs/by-name/da/dash/package.nix
index 030968dbc904..1056de81abe9 100644
--- a/pkgs/by-name/da/dash/package.nix
+++ b/pkgs/by-name/da/dash/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
   version = "0.5.13.1";
 
   src = fetchurl {
-    url = "http://gondor.apana.org.au/~herbert/dash/files/dash-${finalAttrs.version}.tar.gz";
+    url = "https://gondor.apana.org.au/~herbert/dash/files/dash-${finalAttrs.version}.tar.gz";
     hash = "sha256-2ScbzgnBJ9mGbiXAEVgt3HWrmIlYoEvE2FU6O48w43A=";
   };
 
diff --git a/pkgs/by-name/do/docbook5/package.nix b/pkgs/by-name/do/docbook5/package.nix
index d1148f26e285..173d9daacd14 100644
--- a/pkgs/by-name/do/docbook5/package.nix
+++ b/pkgs/by-name/do/docbook5/package.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation (finalAttrs: {
   version = "5.0.1";
 
   src = fetchurl {
-    url = "http://www.docbook.org/xml/${finalAttrs.version}/docbook-${finalAttrs.version}.zip";
+    url = "https://www.docbook.org/xml/${finalAttrs.version}/docbook-${finalAttrs.version}.zip";
     sha256 = "1iz3hq1lqgnshvlz4j9gvh4jy1ml74qf90vqf2ikbq0h4i2xzybs";
   };
 
diff --git a/pkgs/by-name/ge/getopt/package.nix b/pkgs/by-name/ge/getopt/package.nix
index 28d4d93ce6f3..27014776c148 100644
--- a/pkgs/by-name/ge/getopt/package.nix
+++ b/pkgs/by-name/ge/getopt/package.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "getopt";
   version = "1.1.6";
   src = fetchurl {
-    url = "http://frodo.looijaard.name/system/files/software/getopt/getopt-${finalAttrs.version}.tar.gz";
+    url = "https://frodo.looijaard.name/system/files/software/getopt/getopt-${finalAttrs.version}.tar.gz";
     sha256 = "1zn5kp8ar853rin0ay2j3p17blxy16agpp8wi8wfg4x98b31vgyh";
   };
 
diff --git a/pkgs/by-name/it/itstool/package.nix b/pkgs/by-name/it/itstool/package.nix
index 828da8654436..1244e0cb1728 100644
--- a/pkgs/by-name/it/itstool/package.nix
+++ b/pkgs/by-name/it/itstool/package.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation (finalAttrs: {
   version = "2.0.7";
 
   src = fetchurl {
-    url = "http://files.itstool.org/itstool/itstool-${finalAttrs.version}.tar.bz2";
+    url = "https://files.itstool.org/itstool/itstool-${finalAttrs.version}.tar.bz2";
     hash = "sha256-a5p80poSu5VZj1dQ6HY87niDahogf4W3TYsydbJ+h8o=";
   };
 
diff --git a/pkgs/by-name/li/libev/package.nix b/pkgs/by-name/li/libev/package.nix
index 8e8435467dae..cc7cc7047374 100644
--- a/pkgs/by-name/li/libev/package.nix
+++ b/pkgs/by-name/li/libev/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
   version = "4.33";
 
   src = fetchurl {
-    url = "http://dist.schmorp.de/libev/Attic/libev-${finalAttrs.version}.tar.gz";
+    url = "https://dist.schmorp.de/libev/Attic/libev-${finalAttrs.version}.tar.gz";
     sha256 = "1sjs4324is7fp21an4aas2z4dwsvs6z4xwrmp72vwpq1s6wbfzjh";
   };
 
diff --git a/pkgs/tools/text/patchutils/generic.nix b/pkgs/tools/text/patchutils/generic.nix
index da112a427ba3..8d97eb12a7c2 100644
--- a/pkgs/tools/text/patchutils/generic.nix
+++ b/pkgs/tools/text/patchutils/generic.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   inherit version patches;
 
   src = fetchurl {
-    url = "http://cyberelk.net/tim/data/patchutils/stable/${pname}-${version}.tar.xz";
+    url = "https://cyberelk.net/tim/data/patchutils/stable/${pname}-${version}.tar.xz";
     inherit sha256;
   };