diff --git a/pkgs/development/python-modules/certifi/default.nix b/pkgs/development/python-modules/certifi/default.nix
index d0ae968b0bef..e21719245c8a 100644
--- a/pkgs/development/python-modules/certifi/default.nix
+++ b/pkgs/development/python-modules/certifi/default.nix
@@ -1,5 +1,6 @@
 { lib
 , buildPythonPackage
+, isPy27
 , fetchFromGitHub
 , pytestCheckHook
 }:
@@ -8,6 +9,8 @@ buildPythonPackage rec {
   pname = "certifi";
   version = "2021.05.30";
 
+  disabled = isPy27;
+
   src = fetchFromGitHub {
     owner = pname;
     repo = "python-certifi";
diff --git a/pkgs/tools/misc/lf/default.nix b/pkgs/tools/misc/lf/default.nix
index b268b170ebbf..8aa8e9a663b7 100644
--- a/pkgs/tools/misc/lf/default.nix
+++ b/pkgs/tools/misc/lf/default.nix
@@ -2,13 +2,13 @@
 
 buildGoModule rec {
   pname = "lf";
-  version = "23";
+  version = "24";
 
   src = fetchFromGitHub {
     owner = "gokcehan";
     repo = "lf";
     rev = "r${version}";
-    sha256 = "sha256-rwKTumletIN4OzvA2VzYh++vioUftvtKYAZoaEL5P7U=";
+    sha256 = "0nc7vfkaxxl2a201wnbz74an3siz8cjwrfylx17v6al5n93vxip0";
   };
 
   vendorSha256 = "sha256-ujQh4aE++K/fn3PJqkAbTtwRyJPSI9TJQ1DvwLF9etU=";