diff --git a/dyndnsd.gemspec b/dyndnsd.gemspec
index 0355302..1292329 100644
--- a/dyndnsd.gemspec
+++ b/dyndnsd.gemspec
@@ -23,10 +23,10 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'rack', '~> 2.0'
   s.add_runtime_dependency 'json'
   s.add_runtime_dependency 'metriks'
-  s.add_runtime_dependency 'opentracing', '~> 0.3'
-  s.add_runtime_dependency 'rack-tracer', '~> 0.4'
-  s.add_runtime_dependency 'spanmanager', '~> 0.3'
-  s.add_runtime_dependency 'jaeger-client', '~> 0.4'
+  s.add_runtime_dependency 'opentracing', '~> 0.3.0'
+  s.add_runtime_dependency 'rack-tracer', '~> 0.4.0'
+  s.add_runtime_dependency 'spanmanager', '~> 0.3.0'
+  s.add_runtime_dependency 'jaeger-client', '~> 0.4.0'
 
   s.add_development_dependency 'bundler'
   s.add_development_dependency 'rake'