diff --git a/cmd/test-bot.rb b/cmd/test-bot.rb
index 9596897b..5234a1ef 100755
--- a/cmd/test-bot.rb
+++ b/cmd/test-bot.rb
@@ -83,6 +83,8 @@ def test_bot_args
              description: "Only run the formulae steps."
       switch "--only-formulae-detect",
              description: "Only run the formulae detection steps."
+      switch "--only-dependents-detect",
+             description: "Only run the dependents detection steps."
       switch "--only-formulae-dependents",
              description: "Only run the formulae dependents steps."
       switch "--only-bottles-fetch",
@@ -98,6 +100,12 @@ def test_bot_args
                   description: "Use these added formulae rather than running the formulae detection steps."
       comma_array "--deleted-formulae=",
                   description: "Use these deleted formulae rather than running the formulae detection steps."
+      comma_array "--source-dependents=",
+                  description: "Use these source dependents rather than running the dependent detection steps."
+      comma_array "--bottled-dependents=",
+                  description: "Use these bottled dependents rather than running the dependent detection steps."
+      comma_array "--testable-dependents=",
+                  description: "Use these testable depenents rather than running the dependent detection steps."
       comma_array "--skipped-or-failed-formulae=",
                   description: "Use these skipped or failed formulae from formulae steps for a " \
                                "formulae dependents step."
diff --git a/lib/tests/formulae_dependents.rb b/lib/tests/formulae_dependents.rb
index 91da8e0b..cb0c083b 100644
--- a/lib/tests/formulae_dependents.rb
+++ b/lib/tests/formulae_dependents.rb
@@ -74,6 +74,9 @@ def dependent_formulae!(formula_name, args:)
         source_dependents, bottled_dependents, testable_dependents =
           dependents_for_formula(formula, formula_name, args:)
 
+        print_dependents(source_dependents, bottled_dependents, testable_dependents)
+        return if args.only_dependents_detect?
+
         source_dependents.each do |dependent|
           install_dependent(dependent, testable_dependents, build_from_source: true, args:)
           install_dependent(dependent, testable_dependents, args:) if bottled?(dependent)
@@ -85,6 +88,12 @@ def dependent_formulae!(formula_name, args:)
       end
 
       def dependents_for_formula(formula, formula_name, args:)
+        source_dependents = Array(args.source_dependents).map { |dep| Formulary.factory(dep) }
+        bottled_dependents = Array(args.bottled_dependents).map { |dep| Formulary.factory(dep) }
+        testable_dependents = Array(args.testable_dependents).map { |dep| Formulary.factory(dep) }
+        dep_array = [source_dependents, bottled_dependents, testable_dependents]
+        return dep_array if dep_array.any?(&:present?)
+
         info_header "Determining dependents..."
 
         uses_args = %w[--formula --eval-all]
@@ -161,6 +170,10 @@ def dependents_for_formula(formula, formula_name, args:)
         bottled_dependents = dependents.select { |dep| bottled?(dep) }
         testable_dependents += bottled_dependents.select(&:test_defined?)
 
+        [source_dependents, bottled_dependents, testable_dependents]
+      end
+
+      def print_dependents(source_dependents, bottled_dependents, testable_dependents)
         info_header "Source dependents:"
         puts source_dependents
 
@@ -170,7 +183,13 @@ def dependents_for_formula(formula, formula_name, args:)
         info_header "Testable dependents:"
         puts testable_dependents
 
-        [source_dependents, bottled_dependents, testable_dependents]
+        return unless ENV["GITHUB_ACTIONS"].present?
+
+        File.open(ENV.fetch("GITHUB_OUTPUT"), "a") do |f|
+          f.puts "source_dependents=#{source_dependents.map(&:full_name).join(",")}"
+          f.puts "bottled_dependents=#{bottled_dependents.map(&:full_name).join(",")}"
+          f.puts "testable_dependents=#{testable_dependents.map(&:full_name).join(",")}"
+        end
       end
 
       def install_dependent(dependent, testable_dependents, args:, build_from_source: false)