diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ccd9d6c..ac36342 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
         matrix:
-          ruby-version: ['3.0', '3.1', '3.2', '3.3']
+          ruby-version: ['3.0', '3.1', '3.2']
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/gem-push.yml b/.github/workflows/gem-push.yml
index 6d759ac..13094f7 100644
--- a/.github/workflows/gem-push.yml
+++ b/.github/workflows/gem-push.yml
@@ -22,7 +22,7 @@ jobs:
     # uses: ruby/setup-ruby@v1
       uses: ruby/setup-ruby@55283cc23133118229fd3f97f9336ee23a179fcf # v1.146.0
       with:
-        ruby-version: 3.3
+        ruby-version: 3.2
 
     - name: Check if version exists
       id: checkversionexists
diff --git a/Gemfile.lock b/Gemfile.lock
index dad7d10..9c88dc2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    gtfs (0.4.2)
+    gtfs (0.5.1)
       multi_json
       rake
       rubyzip (~> 2.3)