diff --git a/Library/Homebrew/test/spec_helper.rb b/Library/Homebrew/test/spec_helper.rb
index 2c09cbbd21a0d..48068f8f378d6 100644
--- a/Library/Homebrew/test/spec_helper.rb
+++ b/Library/Homebrew/test/spec_helper.rb
@@ -204,6 +204,7 @@
   config.around do |example|
     Homebrew.raise_deprecation_exceptions = true
 
+    Tap.each(&:clear_cache)
     Cachable::Registry.clear_all_caches
     FormulaInstaller.clear_attempted
     FormulaInstaller.clear_installed