diff --git a/Gemfile.lock b/Gemfile.lock
index 83768aa..47997ba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,8 +2,8 @@ PATH
   remote: .
   specs:
     actual_db_schema (0.7.6)
-      activerecord (>= 6.0.0)
-      activesupport (>= 6.0.0)
+      activerecord
+      activesupport
       csv
 
 GEM
diff --git a/actual_db_schema.gemspec b/actual_db_schema.gemspec
index 4a49412..d742099 100644
--- a/actual_db_schema.gemspec
+++ b/actual_db_schema.gemspec
@@ -35,8 +35,8 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   # Uncomment to register a new dependency of your gem
-  spec.add_runtime_dependency "activerecord", ">= 6.0.0"
-  spec.add_runtime_dependency "activesupport", ">= 6.0.0"
+  spec.add_runtime_dependency "activerecord"
+  spec.add_runtime_dependency "activesupport"
   spec.add_runtime_dependency "csv"
 
   spec.add_development_dependency "appraisal"
diff --git a/lib/actual_db_schema/migration_context.rb b/lib/actual_db_schema/migration_context.rb
index dd5fd01..338efb6 100644
--- a/lib/actual_db_schema/migration_context.rb
+++ b/lib/actual_db_schema/migration_context.rb
@@ -20,7 +20,12 @@ def establish_connection(db_config)
     end
 
     def configs
-      ActiveRecord::Base.configurations.configs_for(env_name: ActiveRecord::Tasks::DatabaseTasks.env)
+      # Rails < 6.0 has a Hash in configurations
+      if ActiveRecord::Base.configurations.is_a?(Hash)
+        [ActiveRecord::Base.configurations[ActiveRecord::Tasks::DatabaseTasks.env]]
+      else
+        ActiveRecord::Base.configurations.configs_for(env_name: ActiveRecord::Tasks::DatabaseTasks.env)
+      end
     end
 
     def context