diff --git a/Gemfile.lock b/Gemfile.lock
index 308e550..dad7d10 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,44 +9,48 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
+    bigdecimal (3.1.8)
     byebug (11.1.3)
-    crack (0.4.5)
+    crack (1.0.0)
+      bigdecimal
       rexml
-    diff-lcs (1.5.0)
-    docile (1.4.0)
+    diff-lcs (1.5.1)
+    docile (1.4.1)
     fakeweb (1.3.0)
-    hashdiff (1.0.1)
+    hashdiff (1.1.1)
     multi_json (1.15.0)
-    public_suffix (4.0.7)
-    rake (13.0.6)
-    rexml (3.2.5)
-    rspec (3.11.0)
-      rspec-core (~> 3.11.0)
-      rspec-expectations (~> 3.11.0)
-      rspec-mocks (~> 3.11.0)
-    rspec-core (3.11.0)
-      rspec-support (~> 3.11.0)
-    rspec-expectations (3.11.0)
+    public_suffix (6.0.1)
+    rake (13.2.1)
+    rexml (3.3.4)
+      strscan
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.11.0)
+      rspec-support (~> 3.13.0)
     rspec-its (1.3.0)
       rspec-core (>= 3.0.0)
       rspec-expectations (>= 3.0.0)
-    rspec-mocks (3.11.1)
+    rspec-mocks (3.13.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.11.0)
-    rspec-support (3.11.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.1)
     rubyzip (2.3.2)
-    simplecov (0.21.2)
+    simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    vcr (6.1.0)
-    webmock (3.14.0)
+    strscan (3.1.0)
+    vcr (6.2.0)
+    webmock (3.23.1)
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
diff --git a/gtfs.gemspec b/gtfs.gemspec
index 39a27c0..26eeaa1 100644
--- a/gtfs.gemspec
+++ b/gtfs.gemspec
@@ -5,7 +5,7 @@ require './lib/gtfs/version'
 Gem::Specification.new do |gem|
   gem.name    = 'gtfs'
   gem.version = GTFS::VERSION
- 
+
   gem.summary = 'Load and read GTFS data from zip bundles'
   gem.description = 'gtfs reads GTFS data from a google-compliant Zip bundle 
                      and returns an object representing the CSV data inside'
@@ -15,8 +15,8 @@ Gem::Specification.new do |gem|
   gem.homepage    = 'https://github.com/nerdEd/gtfs'
 
   gem.license = 'MIT'
-  
-  gem.required_ruby_version = '>= 1.9.2'
+
+  gem.required_ruby_version = '>= 2.7'
 
   gem.add_dependency 'rake'
   gem.add_dependency 'multi_json'