diff --git a/Formula/ignition-plugin1.rb b/Formula/ignition-plugin1.rb
index 37d4ab6bd..756da4d05 100644
--- a/Formula/ignition-plugin1.rb
+++ b/Formula/ignition-plugin1.rb
@@ -14,6 +14,7 @@ class IgnitionPlugin1 < Formula
 
   depends_on "cmake"
   depends_on "ignition-cmake2"
+  depends_on "ignition-tools"
   depends_on macos: :high_sierra # c++17
   depends_on "pkg-config"