diff --git a/pkgs/data/fonts/babelstone-han/default.nix b/pkgs/data/fonts/babelstone-han/default.nix
index 3485b181d5af..0d46fc92d5f2 100644
--- a/pkgs/data/fonts/babelstone-han/default.nix
+++ b/pkgs/data/fonts/babelstone-han/default.nix
@@ -14,7 +14,7 @@ in fetchzip {
 
   meta = with lib; {
     description = "Unicode CJK font with over 36000 Han characters";
-    homepage = http://www.babelstone.co.uk/Fonts/Han.html;
+    homepage = https://www.babelstone.co.uk/Fonts/Han.html;
 
     license = licenses.free;
     platforms = platforms.all;
diff --git a/pkgs/development/interpreters/eff/default.nix b/pkgs/development/interpreters/eff/default.nix
index 7c7cd9abb7e9..9da2b0d899d7 100644
--- a/pkgs/development/interpreters/eff/default.nix
+++ b/pkgs/development/interpreters/eff/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   checkTarget = "test";
 
   meta = with stdenv.lib; {
-    homepage = http://www.eff-lang.org;
+    homepage = https://www.eff-lang.org;
     description = "A functional programming language based on algebraic effects and their handlers";
     longDescription = ''
       Eff is a functional language with handlers of not only exceptions,
diff --git a/pkgs/development/python-modules/croniter/default.nix b/pkgs/development/python-modules/croniter/default.nix
index e262a7f164c8..969a4e8af89e 100644
--- a/pkgs/development/python-modules/croniter/default.nix
+++ b/pkgs/development/python-modules/croniter/default.nix
@@ -30,7 +30,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "croniter provides iteration for datetime object with cron like format";
-    homepage = http://github.com/kiorky/croniter;
+    homepage = https://github.com/kiorky/croniter;
     license = licenses.mit;
     maintainers = [ maintainers.costrouc ];
   };
diff --git a/pkgs/development/python-modules/flask-babelex/default.nix b/pkgs/development/python-modules/flask-babelex/default.nix
index c5968be6b8fa..c61967af6bcd 100644
--- a/pkgs/development/python-modules/flask-babelex/default.nix
+++ b/pkgs/development/python-modules/flask-babelex/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Adds i18n/l10n support to Flask applications";
-    homepage = http://github.com/mrjoes/flask-babelex;
+    homepage = https://github.com/mrjoes/flask-babelex;
     license = licenses.bsd3;
     maintainers = [ maintainers.costrouc ];
   };
diff --git a/pkgs/development/python-modules/flask-openid/default.nix b/pkgs/development/python-modules/flask-openid/default.nix
index ad5001636095..c1f9a51a2250 100644
--- a/pkgs/development/python-modules/flask-openid/default.nix
+++ b/pkgs/development/python-modules/flask-openid/default.nix
@@ -27,7 +27,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "OpenID support for Flask";
-    homepage = http://github.com/mitsuhiko/flask-openid/;
+    homepage = https://pythonhosted.org/Flask-OpenID/;
     license = licenses.bsd3;
     maintainers = [ maintainers.costrouc ];
   };
diff --git a/pkgs/development/python-modules/kmapper/default.nix b/pkgs/development/python-modules/kmapper/default.nix
index 3904473f1a3e..67b9343ecca5 100644
--- a/pkgs/development/python-modules/kmapper/default.nix
+++ b/pkgs/development/python-modules/kmapper/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Python implementation of Mapper algorithm for Topological Data Analysis";
-    homepage = http://kepler-mapper.scikit-tda.org;
+    homepage = https://kepler-mapper.scikit-tda.org/;
     license = licenses.mit;
     maintainers = [ maintainers.costrouc ];
   };
diff --git a/pkgs/development/python-modules/mahotas/default.nix b/pkgs/development/python-modules/mahotas/default.nix
index 101468da09f4..dc18f5ac405f 100644
--- a/pkgs/development/python-modules/mahotas/default.nix
+++ b/pkgs/development/python-modules/mahotas/default.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
 
   meta = with stdenv.lib; {
     description = "Computer vision package based on numpy";
-    homepage = http://mahotas.readthedocs.io/;
+    homepage = https://mahotas.readthedocs.io/;
     maintainers = with maintainers; [ luispedro ];
     license = licenses.mit;
     platforms = platforms.unix;
diff --git a/pkgs/development/python-modules/meinheld/default.nix b/pkgs/development/python-modules/meinheld/default.nix
index 31892d12a1f7..f1291a14f3f4 100644
--- a/pkgs/development/python-modules/meinheld/default.nix
+++ b/pkgs/development/python-modules/meinheld/default.nix
@@ -16,7 +16,7 @@ buildPythonPackage rec {
 
   meta = with stdenv.lib; {
     description = "High performance asynchronous Python WSGI Web Server";
-    homepage = http://meinheld.org/;
+    homepage = https://meinheld.org/;
     license = licenses.bsd3;
   };
 }
diff --git a/pkgs/development/python-modules/micawber/default.nix b/pkgs/development/python-modules/micawber/default.nix
index b5fd1d334584..003234c2adfc 100644
--- a/pkgs/development/python-modules/micawber/default.nix
+++ b/pkgs/development/python-modules/micawber/default.nix
@@ -12,7 +12,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [ beautifulsoup4 ];
 
   meta = with stdenv.lib; {
-    homepage = http://micawber.readthedocs.io/en/latest/;
+    homepage = https://micawber.readthedocs.io/en/latest/;
     description = "A small library for extracting rich content from urls";
     license = licenses.mit;
     longDescription = ''
diff --git a/pkgs/development/python-modules/nuitka/default.nix b/pkgs/development/python-modules/nuitka/default.nix
index 6be1f39328f1..ba6dbced66e9 100644
--- a/pkgs/development/python-modules/nuitka/default.nix
+++ b/pkgs/development/python-modules/nuitka/default.nix
@@ -46,7 +46,7 @@ in buildPythonPackage rec {
   meta = with stdenv.lib; {
     description = "Python compiler with full language support and CPython compatibility";
     license = licenses.asl20;
-    homepage = http://nuitka.net/;
+    homepage = https://nuitka.net/;
   };
 
 }
diff --git a/pkgs/tools/filesystems/duff/default.nix b/pkgs/tools/filesystems/duff/default.nix
index 3981521097a9..d68ad10bd0dc 100644
--- a/pkgs/tools/filesystems/duff/default.nix
+++ b/pkgs/tools/filesystems/duff/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation {
       Duff is a Unix command-line utility for quickly finding duplicates in
       a given set of files.
     '';
-    homepage = http://duff.dreda.org/;
+    homepage = https://duff.dreda.org/;
     license = licenses.zlib;
     platforms = platforms.all;
   };
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 95ff84d48428..c932eaeeaaaa 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -1519,7 +1519,7 @@ let
     buildInputs = [ TestFatal ];
     propagatedBuildInputs = [ CatalystActionRenderView CatalystPluginConfigLoader CatalystPluginStaticSimple ConfigGeneral FileChangeNotify FileCopyRecursive ModuleInstall TemplateToolkit ];
     meta = {
-      homepage = http://dev.catalyst.perl.org/;
+      homepage = http://wiki.catalystframework.org/wiki/;
       description = "Catalyst Development Tools";
       license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
     };
@@ -1577,7 +1577,7 @@ let
     buildInputs = [ TestFatal TypeTiny ];
     propagatedBuildInputs = [ CGISimple CGIStruct ClassC3AdoptNEXT DataDump HTTPBody ModulePluggable MooseXEmulateClassAccessorFast MooseXGetopt MooseXMethodAttributes MooseXRoleWithOverloading PathClass PerlIOutf8_strict PlackMiddlewareFixMissingBodyInRedirect PlackMiddlewareMethodOverride PlackMiddlewareRemoveRedundantBody PlackMiddlewareReverseProxy PlackTestExternalServer SafeIsa StringRewritePrefix TaskWeaken TextSimpleTable TreeSimpleVisitorFactory URIws ];
     meta = {
-      homepage = http://dev.catalyst.perl.org/;
+      homepage = http://wiki.catalystframework.org/wiki/;
       description = "The Catalyst Framework Runtime";
       license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
     };
@@ -1971,7 +1971,7 @@ let
       sha256 = "1c32b30131871e8a7b23f47d8f65d9cdeb87069fa4c221781a03416496f91f16";
     };
     meta = {
-      homepage = "http://github.com/toddr/CDB_File";
+      homepage = "https://github.com/toddr/CDB_File";
       description = "Perl extension for access to cdb databases";
       license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
     };
@@ -4995,7 +4995,7 @@ let
       EOF
     '';
     meta = {
-      homepage = http://dbi.perl.org/;
+      homepage = https://dbi.perl.org/;
       description = "Database independent interface for Perl";
       license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
     };
@@ -5028,7 +5028,7 @@ let
     buildInputs = [ DBDSQLite TestDeep TestException TestWarn ];
     propagatedBuildInputs = [ ClassAccessorGrouped ClassC3Componentised ConfigAny ContextPreserve DBI DataDumperConcise DataPage ModuleFind PathClass SQLAbstract ScopeGuard SubName namespaceclean ];
     meta = {
-      homepage = http://www.dbix-class.org/;
+      homepage = https://metacpan.org/pod/DBIx::Class;
       description = "Extensible and flexible object <-> relational mapper";
       license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
     };
@@ -15428,7 +15428,7 @@ let
     };
     buildInputs = [ TestLongString TestWWWMechanize TestWWWMechanizeCGI ];
     meta = {
-      homepage = http://jaldhar.github.com/REST-Utils;
+      homepage = https://jaldhar.github.io/REST-Utils/;
       description = "Utility functions for REST applications";
       license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
     };
@@ -19991,7 +19991,7 @@ let
     outputs = [ "out" ];
     propagatedBuildInputs = [ CGI CSSDOM ConfigGeneral LWP NetIP TermReadKey ];
     meta = {
-      homepage = http://validator.w3.org/checklink;
+      homepage = https://validator.w3.org/checklink;
       description = "A tool to check links and anchors in Web pages or full Web sites";
       license = stdenv.lib.licenses.w3c;
     };