diff --git a/scripts/custom-docker-build b/scripts/custom-docker-build
index 6598e70..2173bdc 100755
--- a/scripts/custom-docker-build
+++ b/scripts/custom-docker-build
@@ -211,8 +211,8 @@ function print_ruby_args() {
             ;;
 
         3.0|3.0.*)
-            RUBY_VERSION="3.0.0"
-            RUBY_DOWNLOAD_SHA256="a13ed141a1c18eb967aac1e33f4d6ad5f21be1ac543c344e0d6feeee54af8e28"
+            RUBY_VERSION="3.0.2"
+            RUBY_DOWNLOAD_SHA256="5085dee0ad9f06996a8acec7ebea4a8735e6fac22f22e2d98c3f2bc3bef7e6f1"
             ;;
 
         *) echo "Unknown ruby version $1"; exit 1;