diff --git a/Makefile b/Makefile
index 5b50c3ba..cec23e66 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,18 @@ switch:
 test:
 	nixos-rebuild --flake ".#${HOST}" dry-activate
 
+# The overridden inputs are just the inputs I typically use with my own
+# fork so we'll have to create a way to seamlessly upgrade those specific
+# inputs. Fortunately for us, this is possible with Nix command line
+# interface.
+#
+# Because of the nature to use my own fork, when to update is an important
+# thing to consider.
 .PHONY: update
 update:
-	nix flake update --commit-lock-file --commit-lockfile-summary "flake.lock: update inputs"
+	git checkout -- flake.lock
+	nix flake update \
+		--override-input nixpkgs github:NixOS/nixpkgs/nixos-unstable \
+		--override-input guix-overlay github:foo-dogsquared/nix-overlay-guix \
+		--override-input home-manager github:nix-community/home-manager \
+		--commit-lock-file --commit-lockfile-summary "flake.lock: update inputs"