diff --git a/.github/workflows/cache-test.sh b/.github/workflows/cache-test.sh
index 49e687b..4a549f5 100755
--- a/.github/workflows/cache-test.sh
+++ b/.github/workflows/cache-test.sh
@@ -7,7 +7,7 @@ seed=$(date)
 
 log=$MAGIC_NIX_CACHE_DAEMONDIR/daemon.log
 
-binary_cache=https://attic-test.fly.dev
+binary_cache=https://flakehub-cache-prod.fly.dev
 
 # Check that the action initialized correctly.
 grep 'FlakeHub cache is enabled' $log
diff --git a/action.yml b/action.yml
index 1f7bbd7..0c6ecce 100644
--- a/action.yml
+++ b/action.yml
@@ -42,7 +42,7 @@ inputs:
     required: false
   flakehub-cache-server:
     description: "The FlakeHub binary cache server."
-    default: "https://attic-test.fly.dev"
+    default: "https://flakehub-cache-prod.fly.dev"
   flakehub-api-server:
     description: "The FlakeHub API server."
     default: "https://api.flakehub.com"