diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cddf51f..4346360 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,15 +24,16 @@ jobs:
           - ruby: "3.3"
           ### TEST RAILS VERSIONS
           - ruby: "2.7"
-            rails_version: "~> 6.0"
+            rails_version: "~> 6.0.0"
           - ruby: "2.7"
-            rails_version: "~> 6.1"
+            rails_version: "~> 6.1.0"
           - ruby: "3.3"
-            rails_version: "~> 7.0"
+            rails_version: "~> 7.0.0"
+            db_gem_version: "~> 1.4" # fixes sqlite3 gem dependency issue
           - ruby: "3.3"
-            rails_version: "~> 7.1"
+            rails_version: "~> 7.1.0"
           - ruby: "3.3"
-            rails_version: "~> 7.2"
+            rails_version: "~> 7.2.0"
 
     steps:
     - uses: actions/checkout@v3
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index 63d3833..e46580f 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -22,3 +22,43 @@
 
   config.filter_rails_from_backtrace!
 end
+
+if Rails::VERSION::STRING.to_f <= 6.0
+  def assert_no_difference(expression, message = nil, &block)
+    assert_difference expression, 0, message, &block
+  end
+
+  def assert_difference(expression, *args, &block)
+    expressions =
+      if expression.is_a?(Hash)
+        message = args[0]
+        expression
+      else
+        difference = args[0] || 1
+        message = args[1]
+        Array(expression).index_with(difference)
+      end
+
+    exps = expressions.keys.map { |e|
+      e.respond_to?(:call) ? e : lambda { eval(e, block.binding) }
+    }
+    before = exps.map(&:call)
+
+    retval = assert_nothing_raised(&block)
+
+    expressions.zip(exps, before) do |(code, diff), exp, before_value|
+      actual = exp.call
+      error  = "#{code.inspect} didn't change by #{diff}, but by #{actual - before_value}"
+      error  = "#{message}.\n#{error}" if message
+      assert_equal(before_value + diff, actual, error)
+    end
+
+    retval
+  end
+
+  def assert_nothing_raised
+    yield.tap { assert(true) }
+  rescue => error
+    raise Minitest::UnexpectedError.new(error)
+  end
+end