diff --git a/.action_hero.yml b/.action_hero.yml
index 2b1f6a2..6be6a8f 100644
--- a/.action_hero.yml
+++ b/.action_hero.yml
@@ -7,6 +7,7 @@ sources:
       - ".action_hero.yml.erb"
       - ".devtools/templates/*.sync:${{dir}}/${{name}}"
       - ".github/**/*.*"
+      - "gemspec.erb:dry-types.gemspec"
       - "spec/support/*"
       - "CODE_OF_CONDUCT.md"
       - "CONTRIBUTING.md"