diff --git a/specs/jekyll/template/flake.nix b/specs/jekyll/template/flake.nix
index 3899280..32df3e4 100644
--- a/specs/jekyll/template/flake.nix
+++ b/specs/jekyll/template/flake.nix
@@ -32,7 +32,7 @@
             buildInputs = [ gems gems.wrappedRuby ];
             src = ./.;
             version = "0.1.0";
-            installPhase = "jekyll b -d $out";
+            installPhase = "JEKYLL_ENV=production jekyll b -d $out";
           };
 
           default = self.packages.${system}.app;