diff --git a/lazylead.gemspec b/lazylead.gemspec
index 651b16f..59fd9ad 100644
--- a/lazylead.gemspec
+++ b/lazylead.gemspec
@@ -77,7 +77,7 @@ tasks instead of solving technical problems."
   s.add_runtime_dependency "tzinfo-data", "1.2023.3"
   s.add_runtime_dependency "vcs4sql", "0.1.1"
   s.add_runtime_dependency "viewpoint", "1.1.1"
-  s.add_runtime_dependency "zaru", "0.3.0"
+  s.add_runtime_dependency "zaru", "1.0.0"
   s.add_development_dependency "codecov", "0.6.0"
   s.add_development_dependency "guard", "2.18.0"
   s.add_development_dependency "guard-minitest", "2.4.6"