diff --git a/pwntools.gemspec b/pwntools.gemspec
index 55e1cd8..75098ab 100644
--- a/pwntools.gemspec
+++ b/pwntools.gemspec
@@ -30,7 +30,7 @@ Gem::Specification.new do |s|
 
   s.add_runtime_dependency 'crabstone', '~> 4'
   s.add_runtime_dependency 'dentaku', '>= 2.0.11', '< 3.6.0'
-  s.add_runtime_dependency 'elftools', '>= 1.0.1', '< 1.2.0'
+  s.add_runtime_dependency 'elftools', '>= 1.0.1', '< 1.3.0'
   s.add_runtime_dependency 'keystone-engine', '~> 0.9'
   s.add_runtime_dependency 'method_source', '>= 0.9'
   s.add_runtime_dependency 'one_gadget', '>= 1.6.2', '< 1.9.0'