diff --git a/lua/base46/init.lua b/lua/base46/init.lua
index 5c5ea78..f179293 100644
--- a/lua/base46/init.lua
+++ b/lua/base46/init.lua
@@ -164,6 +164,11 @@ M.load_all_highlights = function()
   for _, file in ipairs(vim.fn.readdir(vim.g.base46_cache)) do
     dofile(vim.g.base46_cache .. file)
   end
+
+  -- update blankline
+  pcall(function()
+    require("ibl").update()
+  end)
 end
 
 M.override_theme = function(default_theme, theme_name)
diff --git a/lua/base46/integrations/nvimtree.lua b/lua/base46/integrations/nvimtree.lua
index 8a107d0..d5f35ca 100644
--- a/lua/base46/integrations/nvimtree.lua
+++ b/lua/base46/integrations/nvimtree.lua
@@ -1,4 +1,7 @@
-local colors = require("base46").get_theme_tb "base_30"
+local get_theme_tb = require("base46").get_theme_tb
+local colors = get_theme_tb "base_30"
+local theme_type = get_theme_tb "type"
+local tune_color = require("base46.colors").change_hex_lightness
 
 return {
   NvimTreeEmptyFolderName = { fg = colors.folder_bg },
@@ -8,7 +11,7 @@ return {
   NvimTreeFolderArrowOpen = { fg = colors.folder_bg },
   NvimTreeFolderArrowClosed = { fg = colors.grey_fg },
   NvimTreeGitDirty = { fg = colors.red },
-  NvimTreeIndentMarker = { fg = colors.grey_fg },
+  NvimTreeIndentMarker = { fg = (theme_type == "dark" and tune_color(colors.line, -2) or colors.one_bg2) },
   NvimTreeNormal = { bg = colors.darker_black },
   NvimTreeNormalNC = { bg = colors.darker_black },
   NvimTreeOpenedFolderName = { fg = colors.folder_bg },