diff --git a/config/initializers/postgres_required_versions.rb b/config/initializers/postgres_required_versions.rb
new file mode 100644
index 00000000000..e98a1e3a4f6
--- /dev/null
+++ b/config/initializers/postgres_required_versions.rb
@@ -0,0 +1,8 @@
+ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.prepend Module.new {
+  def initialize(*args)
+    super
+    if postgresql_version < 90400 || postgresql_version >= 90600
+      raise "The version of PostgreSQL being connected to is incompatible with #{I18n.t("product.name")}"
+    end
+  end
+}