diff --git a/.github/workflows/ruby_versions.json b/.github/workflows/ruby_versions.json
index c344632..7c03cf8 100644
--- a/.github/workflows/ruby_versions.json
+++ b/.github/workflows/ruby_versions.json
@@ -1,4 +1,6 @@
 [
+  "4.0.0",
+  "3.4.8",
   "3.4.7",
   "3.4.6",
   "3.4.5",