diff --git a/pkgs/development/tools/misc/dialog/default.nix b/pkgs/development/tools/misc/dialog/default.nix
index 97db1b5b7e8..ac5fb4118be 100644
--- a/pkgs/development/tools/misc/dialog/default.nix
+++ b/pkgs/development/tools/misc/dialog/default.nix
@@ -1,4 +1,6 @@
-{ lib, stdenv, fetchurl
+{ lib
+, stdenv
+, fetchurl
 , ncurses
 , withLibrary ? false, libtool
 , unicodeSupport ? true
@@ -10,14 +12,11 @@ assert unicodeSupport -> ncurses.unicode && ncurses != null;
 
 stdenv.mkDerivation rec {
   pname = "dialog";
-  version = "1.3-20201126";
+  version = "1.3-20210117";
 
   src = fetchurl {
-    urls = [
-      "ftp://ftp.invisible-island.net/dialog/${pname}-${version}.tgz"
-      "https://invisible-mirror.net/archives/dialog/${pname}-${version}.tgz"
-    ];
-    sha256 = "sha256-ySM6bI6jOlniN45RRq4r0TtRl0TP22R690IK2sWtOGY=";
+    url = "ftp://ftp.invisible-island.net/dialog/${pname}-${version}.tgz";
+    sha256 = "PB7Qj0S89vFZ8qpv3nZduU6Jl7Pu+0nYtMhmkWk8Q+E=";
   };
 
   buildInputs = [ ncurses ];
diff --git a/pkgs/misc/emulators/stella/default.nix b/pkgs/misc/emulators/stella/default.nix
index 458922bdc1d..f6a3d65c4bd 100644
--- a/pkgs/misc/emulators/stella/default.nix
+++ b/pkgs/misc/emulators/stella/default.nix
@@ -1,14 +1,19 @@
-{ lib, stdenv, fetchFromGitHub, pkg-config, SDL2 }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, pkg-config
+, SDL2
+}:
 
 stdenv.mkDerivation rec {
   pname = "stella";
-  version = "6.4";
+  version = "6.5.1";
 
   src = fetchFromGitHub {
     owner = "stella-emu";
     repo = pname;
     rev = version;
-    sha256 = "0gva6pw5c1pplcf2g48zmm24h1134v0vr705rbzj4v6ifp3adrsl";
+    sha256 = "2O7pN0xByEbWVL32VZw9191tG+kCMOuivJZRpXssQIw=";
   };
 
   nativeBuildInputs = [ pkg-config ];
@@ -17,15 +22,19 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib;{
+    homepage = "https://stella-emu.github.io/";
     description = "An open-source Atari 2600 VCS emulator";
     longDescription = ''
-    Stella is a multi-platform Atari 2600 VCS emulator released under
-    the GNU General Public License (GPL). Stella was originally
-    developed for Linux by Bradford W. Mott, and is currently
-    maintained by Stephen Anthony.
-    As of its 3.5 release, Stella is officially donationware.
+      Stella is a multi-platform Atari 2600 VCS emulator released under the GNU
+      General Public License (GPL). Stella was originally developed for Linux by
+      Bradford W. Mott, and is currently maintained by Stephen Anthony. Since
+      its original release several people have joined the development team to
+      port Stella to other operating systems such as AcornOS, AmigaOS, DOS,
+      FreeBSD, IRIX, Linux, OS/2, MacOS, Unix, and Windows. The development team
+      is working hard to perfect the emulator and we hope you enjoy our effort.
+
+      As of its 3.5 release, Stella is officially donationware.
     '';
-    homepage = "https://stella-emu.github.io/";
     license = licenses.gpl2;
     maintainers = [ maintainers.AndersonTorres ];
     platforms = platforms.linux;
diff --git a/pkgs/tools/cd-dvd/cue2pops/default.nix b/pkgs/tools/cd-dvd/cue2pops/default.nix
index e5d95e96fbc..70ab6db07c2 100644
--- a/pkgs/tools/cd-dvd/cue2pops/default.nix
+++ b/pkgs/tools/cd-dvd/cue2pops/default.nix
@@ -1,9 +1,11 @@
-{ lib, stdenv, fetchFromGitHub }:
+{ lib
+, stdenv
+, fetchFromGitHub
+}:
 
-with lib;
 stdenv.mkDerivation {
   pname = "cue2pops";
-  version = "git-2018-01-04";
+  version = "unstable-2018-01-04";
 
   src = fetchFromGitHub {
     owner = "makefu";
@@ -14,14 +16,14 @@ stdenv.mkDerivation {
 
   dontConfigure = true;
 
-  makeFlags = ["CC=cc"];
+  makeFlags = [ "CC=cc" ];
 
   installPhase = ''
     install --directory --mode=755 $out/bin
     install --mode=755 cue2pops $out/bin
   '';
 
-  meta = {
+  meta = with lib; {
     description = "Convert CUE to ISO suitable to POPStarter";
     homepage = "https://github.com/makefu/cue2pops-linux";
     maintainers = with maintainers; [ AndersonTorres ];