diff --git a/config.toml b/config.toml
index 8375438..0a546c4 100644
--- a/config.toml
+++ b/config.toml
@@ -46,6 +46,7 @@ keywords = ["Salar", "Rahmanian", "Salar Rahmanian", "Blog", "python", "scala",
   enable = true
   repo = "softinio/softinio.com"
   issueTerm = "url"
+  # theme = "preferred-color-scheme"
 
 [sitemap]
   changefreq = "weekly"
diff --git a/content/post/moving-from-homebrew-to-nix-package-manager.md b/content/post/moving-from-homebrew-to-nix-package-manager.md
index 50efda8..1f761c9 100644
--- a/content/post/moving-from-homebrew-to-nix-package-manager.md
+++ b/content/post/moving-from-homebrew-to-nix-package-manager.md
@@ -5,13 +5,12 @@ description = "Moving from Homebrew to Nix Package manager on my macbook pro"
 featured = true
 draft = false
 toc = true
+featureImage = "https://via.softinio.com/Screen-Shot-2019-02-17-13-04-16.png"
 keywords = ["nix", "nixos", "macos", "macbook", "package manager", "functional programming"]
 tags = ["nix", "nixos", "macos", "functional programming"]
 categories = ["nix", "nixos", "macos"]
 +++
 
-![Nix](https://via.softinio.com/Screen-Shot-2019-02-17-13-04-16.png)
-
 As all my friends, colleagues and followers know I am very big on functional programming, so when I heard about nixOS and the nix package manager (A Purely Functional package manager) I really wanted to find out more about it.
 
 **Quote from** [Nix](https://nixos.org/nix/)