diff --git a/Gemfile.lock b/Gemfile.lock
index 358978b..1444130 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ PATH
       rails (~> 4.2)
     diaspora_federation-test (0.0.10)
       diaspora_federation (= 0.0.10)
-      factory_girl (~> 4.5.0)
+      factory_girl (~> 4.5, >= 4.5.0)
 
 GEM
   remote: https://rubygems.org/
diff --git a/diaspora_federation-test.gemspec b/diaspora_federation-test.gemspec
index 9255b0d..b6219c8 100644
--- a/diaspora_federation-test.gemspec
+++ b/diaspora_federation-test.gemspec
@@ -20,5 +20,5 @@ Gem::Specification.new do |s|
   s.required_ruby_version = "~> 2.0"
 
   s.add_dependency "diaspora_federation", DiasporaFederation::VERSION
-  s.add_dependency "factory_girl", "~> 4.5.0"
+  s.add_dependency "factory_girl", "~> 4.5", ">= 4.5.0"
 end