diff --git a/lib/tasks/specs.rake b/lib/tasks/specs.rake
index 6f9b2068cf..dddb5ffb54 100644
--- a/lib/tasks/specs.rake
+++ b/lib/tasks/specs.rake
@@ -10,7 +10,7 @@ namespace :openfoodnetwork do
       end
 
       def execute_rspec_for_engine(engine_path)
-        system "cd #{engine_path.expand_path} && bundle exec rspec"
+        system "cd #{engine_path.expand_path} && DISABLE_KNAPSACK=true bundle exec rspec"
       end
 
       engine_paths = detect_engine_paths