diff --git a/metric_fu.gemspec b/metric_fu.gemspec
index 82bb31c88..385f3c410 100644
--- a/metric_fu.gemspec
+++ b/metric_fu.gemspec
@@ -43,7 +43,7 @@ Gem::Specification.new do |s|
 
   # metric dependencies
   s.add_runtime_dependency "flay",                  [">= 2.0.1",  "~> 2.1"]
-  s.add_runtime_dependency "churn",                 ["~> 0.0.35"]
+  s.add_runtime_dependency "churn",                 [">= 1.0.2",  "~> 1.0"]
   s.add_runtime_dependency "flog",                  [">= 4.1.1",  "~> 4.1"]
   s.add_runtime_dependency "reek",                  [">= 1.3.4",  "< 3.0"]
   s.add_runtime_dependency "cane",                  [">= 2.5.2",  "~> 2.5"]