diff --git a/Library/Homebrew/github_runner_matrix.rb b/Library/Homebrew/github_runner_matrix.rb
index 70ccfe07c2b22..492faf73c4eb4 100644
--- a/Library/Homebrew/github_runner_matrix.rb
+++ b/Library/Homebrew/github_runner_matrix.rb
@@ -169,6 +169,8 @@ def generate_runners!
         ["#{version}-arm64", runner_timeout]
       end
 
+      # We test recursive dependents on ARM macOS, so they can be slower than our Intel runners.
+      timeout *= 2 if @dependent_matrix && timeout < GITHUB_ACTIONS_RUNNER_TIMEOUT
       spec = MacOSRunnerSpec.new(
         name:    "macOS #{version}-arm64",
         runner:,