diff --git a/.github/workflows/luarocks.yml b/.github/workflows/luarocks.yml
index bdfc498..61f86f2 100644
--- a/.github/workflows/luarocks.yml
+++ b/.github/workflows/luarocks.yml
@@ -14,7 +14,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Luarocks upload
-        uses: nvim-neorocks/luarocks-tag-release@v5
+        uses: nvim-neorocks/luarocks-tag-release@v7
         with:
           name: flatten.nvim
           labels: |
diff --git a/lua/flatten/core.lua b/lua/flatten/core.lua
index e7388d3..a6c2a42 100644
--- a/lua/flatten/core.lua
+++ b/lua/flatten/core.lua
@@ -3,7 +3,7 @@ local M = {}
 local function path_is_absolute(path)
   path = string.gsub(path, "^%s+://", "")
 
-  if jit.os == "Windows" then
+  if vim.fn.has("win32") == 1 then
     return string.find(path, "^%a:") ~= nil
   else
     return string.find(path, "^/") ~= nil
diff --git a/lua/flatten/guest.lua b/lua/flatten/guest.lua
index 068a11d..a1d83e8 100644
--- a/lua/flatten/guest.lua
+++ b/lua/flatten/guest.lua
@@ -38,7 +38,7 @@ local function send_files(files, stdin, quickfix)
 
   local server = vim.fn.fnameescape(vim.v.servername)
   local cwd = vim.fn.fnameescape(vim.fn.getcwd(-1, -1))
-  if jit.os == "Windows" then
+  if vim.fn.has("win32") == 1 then
     server = sanitize(server)
     cwd = sanitize(cwd)
   end
@@ -71,7 +71,7 @@ end
 local function send_commands()
   local server = vim.fn.fnameescape(vim.v.servername)
   local cwd = vim.fn.fnameescape(vim.fn.getcwd(-1, -1))
-  if jit.os == "Windows" then
+  if vim.fn.has("win32") == 1 then
     server = sanitize(server)
     cwd = sanitize(cwd)
   end