diff --git a/process_shared.gemspec b/process_shared.gemspec
index a934148..3a38937 100644
--- a/process_shared.gemspec
+++ b/process_shared.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency('ffi', '~> 1.0')
 
-  s.add_development_dependency('ci_reporter_minitest')
+  s.add_development_dependency('ci_reporter_minitest', '~> 1.0')
   s.add_development_dependency('flog')
   s.add_development_dependency('minitest')
   s.add_development_dependency('minitest-matchers')