diff --git a/rubies/3.4.9-pshopify1 b/rubies/3.4.9-pshopify1
new file mode 100644
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--- /dev/null
+++ b/rubies/3.4.9-pshopify1
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+# https://github.com/Shopify/ruby/compare/v3_4_9...Shopify:v3.4.9-pshopify1
+
+# Based off v3_4_9, with the following changes:
+#   * Convert K&R function definitions in configure.ac
+#   * Fix env debug assertion failure w/ Ractors+JITs
+#   * Check for VM_ENV_DATA_INDEX_FLAGS in mid-escape
+
+install_package "openssl-3.0.19" "https://github.com/openssl/openssl/releases/download/openssl-3.0.19/openssl-3.0.19.tar.gz#fa5a4143b8aae18be53ef2f3caf29a2e0747430b8bc74d32d88335b94ab63072" openssl --if needs_openssl:1.0.2-3.x.x
+install_git "ruby-3.4.9-pshopify1" "https://github.com/Shopify/ruby.git" "v3.4.9-pshopify1" autoconf enable_shared standard