diff --git a/adhearsion.gemspec b/adhearsion.gemspec
index 4f95fef2..352bab65 100644
--- a/adhearsion.gemspec
+++ b/adhearsion.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.add_runtime_dependency 'activesupport', [">= 3.0.0", "< 5.0.0"]
+  s.add_runtime_dependency 'activesupport', ">= 3.0.0", "< 8.0.0"
   s.add_runtime_dependency 'adhearsion-loquacious', ["~> 1.9"]
   s.add_runtime_dependency 'bundler', [">= 1.0"]
   s.add_runtime_dependency 'celluloid', ["~> 0.14"]
@@ -35,8 +35,8 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'pry'
   s.add_runtime_dependency 'punchblock', ["~> 2.6"]
   s.add_runtime_dependency 'rake'
-  s.add_runtime_dependency 'ruby_speech', ["~> 2.0"]
-  s.add_runtime_dependency 'thor', "~> 0.18.0"
+  s.add_runtime_dependency 'ruby_speech', ">= 2", "< 4"
+  s.add_runtime_dependency 'thor', ">= 0.18", "< 1.3"
 
   s.add_development_dependency 'aruba', "~> 0.5"
   s.add_development_dependency 'cucumber'