diff --git a/fit4ruby.gemspec b/fit4ruby.gemspec
index d208b5a..c6f0e89 100644
--- a/fit4ruby.gemspec
+++ b/fit4ruby.gemspec
@@ -24,9 +24,9 @@ EOT
   spec.require_paths = ["lib"]
   spec.required_ruby_version = '>=2.3'
 
-  spec.add_dependency('bindata', '~>2.4.14')
-  spec.add_development_dependency('yard', '~>0.9.28')
-  spec.add_development_dependency('rake', '~>13.0')
+  spec.add_dependency('bindata', '>=2.4.14')
+  spec.add_development_dependency('yard', '>=0.9.28')
+  spec.add_development_dependency('rake', '>=13.0')
   spec.add_development_dependency('bundler', '>=2.2')
   spec.add_development_dependency('rspec', '>=3.12')
   spec.add_development_dependency('pry', '>=0.14')