diff --git a/middleman-core/lib/middleman-core/templates/extension/gemspec b/middleman-core/lib/middleman-core/templates/extension/gemspec
index f0a27cb9..485e6e17 100644
--- a/middleman-core/lib/middleman-core/templates/extension/gemspec
+++ b/middleman-core/lib/middleman-core/templates/extension/gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
   
   # The version of middleman-core your extension depends on
-  s.add_runtime_dependency("middleman-core", [">= 3.0.0.beta.2"])
+  s.add_runtime_dependency("middleman-core", [">= <%= ::Middleman::VERSION %>"])
   
   # Additional dependencies
   # s.add_runtime_dependency("gem-name", "gem-version")