diff --git a/spec/helper.rb b/spec/helper.rb
index 21e520b4..9a5166e7 100644
--- a/spec/helper.rb
+++ b/spec/helper.rb
@@ -36,6 +36,11 @@
 db_adapter ||= gemfile && gemfile[%r{gemfiles/(.*?)/}] && $1 # rubocop:disable Style/PerlBackrefs
 db_adapter ||= "sqlite3"
 
+if db_adapter == "postgresql" && RUBY_VERSION < "2.4"
+  # Fixes a seg fault for old ruby
+  ENV["PGGSSENCMODE"] = "disable"
+end
+
 if db_adapter == "trilogy" && Gem::Version.new("7.1") > Gem::Version.new(ActiveRecord::VERSION::STRING)
   require "trilogy_adapter/connection"
   ActiveSupport.on_load(:active_record) { extend TrilogyAdapter::Connection }