4 files changed, 4 insertions, 4 deletions
diff --git a/pkgs/applications/misc/k2pdfopt/default.nix b/pkgs/applications/misc/k2pdfopt/default.nix
index 1cab20baef15..ad2381394f46 100644
--- a/pkgs/applications/misc/k2pdfopt/default.nix
+++ b/pkgs/applications/misc/k2pdfopt/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     mupdf_modded = mupdf.overrideAttrs (attrs: {
       name = "mupdf-1.10a";
       src = fetchurl {
-        url = "http://mupdf.com/downloads/archive/mupdf-1.10a-source.tar.gz";
+        url = "https://mupdf.com/downloads/archive/mupdf-1.10a-source.tar.gz";
         sha256 = "0dm8wcs8i29aibzkqkrn8kcnk4q0kd1v66pg48h5c3qqp4v1zk5a";
       };
       # Excluded the pdf-*.c files, since they mostly just broke the #includes
diff --git a/pkgs/applications/misc/mupdf/default.nix b/pkgs/applications/misc/mupdf/default.nix
index 1b510221d121..000a916b737a 100644
--- a/pkgs/applications/misc/mupdf/default.nix
+++ b/pkgs/applications/misc/mupdf/default.nix
@@ -18,7 +18,7 @@ in stdenv.mkDerivation rec {
   name = "mupdf-${version}";
 
   src = fetchurl {
-    url = "http://mupdf.com/downloads/archive/${name}-source.tar.gz";
+    url = "https://mupdf.com/downloads/archive/${name}-source.tar.gz";
     sha256 = "0mc7a92zri27lk17wdr2iffarbfi4lvrmxhc53sz84hm5yl56qsw";
   };
 
diff --git a/pkgs/applications/misc/mupdf/default.upstream b/pkgs/applications/misc/mupdf/default.upstream
index 07cafdb0c2a4..852233633ca5 100644
--- a/pkgs/applications/misc/mupdf/default.upstream
+++ b/pkgs/applications/misc/mupdf/default.upstream
@@ -1,4 +1,4 @@
-url http://mupdf.com/downloads/archive/
+url https://mupdf.com/downloads/archive/
 do_overwrite(){
   ensure_hash
   ensure_version
diff --git a/pkgs/applications/misc/wordnet/default.nix b/pkgs/applications/misc/wordnet/default.nix
index b93295850bcd..71d95e138927 100644
--- a/pkgs/applications/misc/wordnet/default.nix
+++ b/pkgs/applications/misc/wordnet/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
          for computational linguistics and natural language processing.
       '';
 
-    homepage = http://wordnet.princeton.edu/;
+    homepage = https://wordnet.princeton.edu/;
 
     maintainers = [ ];
     platforms = with stdenv.lib.platforms; linux ++ darwin;