diff --git a/Library/Contributions/cmd/brew-test-bot.rb b/Library/Contributions/cmd/brew-test-bot.rb
index 3244263f45..b7d254aef3 100755
--- a/Library/Contributions/cmd/brew-test-bot.rb
+++ b/Library/Contributions/cmd/brew-test-bot.rb
@@ -307,6 +307,7 @@ class Test
       unless installed_gcc
         test "brew", "install", "gcc"
         installed_gcc = true
+        OS::Mac.clear_version_cache
         retry
       end
       skip formula