1 files changed, 1 insertions, 1 deletions

diff --git a/src/luarocks/deps.lua b/src/luarocks/deps.lua
index 5802601e..13b531f6 100644
--- a/src/luarocks/deps.lua
+++ b/src/luarocks/deps.lua
@@ -811,7 +811,7 @@ function deps.check_lua_libdir(vars)
    local err
    if ok then
       local filename = dir.path(vars.LUA_LIBDIR, vars.LUA_LIBDIR_FILE)
-      local fd = io.open(filename, "r")
+      local fd = io.open(filename, "rb")
       if fd then
          if not vars.LUA_LIBDIR_FILE:match((cfg.lua_version:gsub("%.", "%%.?"))) then