diff --git a/pkgs/blackmagic-desktop-video/default.nix b/pkgs/blackmagic-desktop-video/default.nix
index ea2f8d4..8bbf396 100644
--- a/pkgs/blackmagic-desktop-video/default.nix
+++ b/pkgs/blackmagic-desktop-video/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
       $out/bin/DesktopVideoHelper
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://www.blackmagicdesign.com/support/family/capture-and-playback";
     maintainers = [ maintainers.hexchen ];
     license = licenses.unfree;
diff --git a/pkgs/decklink/default.nix b/pkgs/decklink/default.nix
index 7545b54..ab0278c 100644
--- a/pkgs/decklink/default.nix
+++ b/pkgs/decklink/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, requireFile, fetchpatch, kernel }:
+{ stdenv, requireFile, fetchpatch, kernel, lib }:
 
 stdenv.mkDerivation rec {
   pname = "decklink";
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://www.blackmagicdesign.com/support/family/capture-and-playback";
     maintainers = [ maintainers.hexchen ];
     license = licenses.unfree;
diff --git a/pkgs/mattermost/default.nix b/pkgs/mattermost/default.nix
index 5bc26af..870d9fe 100644
--- a/pkgs/mattermost/default.nix
+++ b/pkgs/mattermost/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchFromGitHub, buildGoPackage, buildEnv }:
+{ stdenv, fetchurl, fetchFromGitHub, buildGoPackage, buildEnv, lib }:
 
 let
   sources = import ../../nix/sources.nix;
@@ -40,7 +40,7 @@ in
     name = "mattermost-${version}";
     paths = [ mattermost-server mattermost-webapp ];
 
-    meta = with stdenv.lib; {
+    meta = with lib; {
       description = "Open-source, self-hosted Slack-alternative";
       homepage = "https://www.mattermost.org";
       license = with licenses; [ agpl3 asl20 ];