diff --git a/.config/bash/module/Nix.sh b/.config/bash/module/Nix.sh
index 54a7187..f1d1b5a 100644
--- a/.config/bash/module/Nix.sh
+++ b/.config/bash/module/Nix.sh
@@ -22,12 +22,14 @@ function nix_find() {
 function nix_unstable() {
 	nix-channel --remove nixos
 	nix-channel --add https://nixos.org/channels/nixos-unstable nixos
+	nix-channel --update
 }
 
 # Switch to Small Unstable branch (for server).
 function nix_unstable_small() {
 	nix-channel --remove nixos
 	nix-channel --add https://nixos.org/channels/nixos-unstable-small nixos
+	nix-channel --update
 }
 
 # Display current channel.