diff --git a/flake.nix b/flake.nix
index d34bc5d3..aac76c78 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,9 +1,9 @@
 {
   inputs = {
-    flake-utils.url = github:numtide/flake-utils;
-    nixpkgs.url = github:nixos/nixpkgs;
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "github:nixos/nixpkgs";
     git-ignore-nix = {
-      url = github:hercules-ci/gitignore.nix/master;
+      url = "github:hercules-ci/gitignore.nix/master";
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };