diff --git a/profiles/iog.nix b/profiles/iog.nix
index 3cbb90c..2e24e0a 100644
--- a/profiles/iog.nix
+++ b/profiles/iog.nix
@@ -14,6 +14,7 @@ in {
     package = nix;
     settings = {
       substituters = [
+        "https://runner.blockfrost.io/bin-cache"
         "https://cache.nixos.org"
         "https://cache.iog.io"
       ];
@@ -21,12 +22,10 @@ in {
         "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
         "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="
         "iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7Rqoo="
+        "runner1:W6f2fUzWauzS9ruoN0WHFGtPJnqngUbqgD5oqCMsoJg=" # runner.blockfrost.io
       ];
+      experimental-features = ["nix-command" "flakes"];
     };
-    extraOptions = ''
-      #repeat = 1   # Ensure reproducibility of builds
-      experimental-features = nix-command flakes
-    '';
   };
 
   # Set the system-wide environment