diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index d4a797e92474a..891e3209d5b02 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -362,7 +362,7 @@ def install_fetch_deps
     return if @compute_dependencies.blank?
 
     compute_dependencies(use_cache: false) if @compute_dependencies.any? do |dep, options|
-      next false if dep.tags != [:build, :test]
+      next false unless dep.implicit?
 
       fetch_dependencies
       install_dependency(dep, options)