diff --git a/pkgs/development/tools/language-servers/lua-language-server/default.nix b/pkgs/development/tools/language-servers/lua-language-server/default.nix
index f3b40cfae31f..88bde6ddfec8 100644
--- a/pkgs/development/tools/language-servers/lua-language-server/default.nix
+++ b/pkgs/development/tools/language-servers/lua-language-server/default.nix
@@ -12,13 +12,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "lua-language-server";
-  version = "3.11.1";
+  version = "3.12.0";
 
   src = fetchFromGitHub {
     owner = "luals";
     repo = "lua-language-server";
     rev = finalAttrs.version;
-    hash = "sha256-ZYaiSBSnO9lPb/5pYa0OiL0KParuMb4/jIBtE3S/Ruo=";
+    hash = "sha256-wyQ4oXGemoT5QVZughFKd386RjzlW4ArtQL0ofMnhpU=";
     fetchSubmodules = true;
   };
 
@@ -39,6 +39,10 @@ stdenv.mkDerivation (finalAttrs: {
       # this feature is not used in lua-language-server
       sed -i /filewatch/d 3rd/bee.lua/test/test.lua
 
+      # flaky tests on linux
+      # https://github.com/LuaLS/lua-language-server/issues/2926
+      sed -i /load-relative-library/d test/tclient/init.lua
+
       pushd 3rd/luamake
     ''
     + lib.optionalString stdenv.hostPlatform.isDarwin ''