diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9e10215..0c8676b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -49,8 +49,8 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          tag_name: v1.0.2
-          release_name: "ORConverter v1.0.2"
+          tag_name: v1.0.3
+          release_name: "ORConverter v1.0.3"
           draft: false
           prerelease: false
 
diff --git a/Gemfile b/Gemfile
index d483ed2..d54ab98 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source "http://rubygems.org"
 gem "nokogiri", ">= 1.8.5"
 gem "i18n", ">= 0.6.6"
 gem "ostruct", ">= 0.6.0"
-gem "tzinfo", ">= 0.3"
+gem "tzinfo", ">= 2.0.6"
 gem "logger", ">= 1.1.0"
 gem "fiddle", ">= 1.1.6"
 gem 'tzinfo-data', '~> 1.2024', '>= 1.2024.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 2d5a901..2afa506 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,7 +24,7 @@ DEPENDENCIES
   logger (>= 1.1.0)
   nokogiri (>= 1.8.5)
   ostruct (>= 0.6.0)
-  tzinfo (>= 0.3)
+  tzinfo (>= 2.0.6)
   tzinfo-data (~> 1.2024, >= 1.2024.2)
 
 BUNDLED WITH
diff --git a/iof_result_list_reader.rb b/iof_result_list_reader.rb
index dfec626..8cbd718 100644
--- a/iof_result_list_reader.rb
+++ b/iof_result_list_reader.rb
@@ -3,6 +3,8 @@
 require 'tzinfo'
 require 'tzinfo/data'
 
+TZInfo::DataSource.set(:ruby)
+
 # @param [Time] base_time
 # @param [Float] factor
 # @return [Time]