diff --git a/derailed_benchmarks.gemspec b/derailed_benchmarks.gemspec
index ed6cb74..358ac4d 100644
--- a/derailed_benchmarks.gemspec
+++ b/derailed_benchmarks.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency "heapy",           "~> 0"
   gem.add_dependency "memory_profiler", ">= 0", "< 2"
-  gem.add_dependency "get_process_mem", "~> 0"
+  gem.add_dependency "get_process_mem"
   gem.add_dependency "benchmark-ips",   "~> 2"
   gem.add_dependency "rack",            ">= 1"
   gem.add_dependency "rake",            "> 10", "< 14"