diff --git a/lua/gopher/_utils/init.lua b/lua/gopher/_utils/init.lua
index 192a70c..0b54355 100644
--- a/lua/gopher/_utils/init.lua
+++ b/lua/gopher/_utils/init.lua
@@ -27,7 +27,7 @@ end
 ---@param path string
 ---@return string
 function utils.readfile_joined(path)
-  return vim.fn.join(vim.fn.readfile(path), "\n")
+  return table.concat(vim.fn.readfile(path), "\n")
 end
 
 return utils
diff --git a/spec/testutils.lua b/spec/testutils.lua
index e5ab9a2..04651d1 100644
--- a/spec/testutils.lua
+++ b/spec/testutils.lua
@@ -22,7 +22,7 @@ end
 ---@param path string
 ---@return string
 function testutils.readfile(path)
-  return vim.fn.join(vim.fn.readfile(path), "\n")
+  return table.concat(vim.fn.readfile(path), "\n")
 end
 
 ---@param fpath string