diff --git a/tests/test_providers.py b/tests/test_providers.py
index ea35301..f1827f5 100644
--- a/tests/test_providers.py
+++ b/tests/test_providers.py
@@ -85,7 +85,7 @@ class TestGeminiProvider:
         assert capabilities.provider == ProviderType.GOOGLE
         assert capabilities.model_name == "gemini-2.5-flash-preview-05-20"
         assert capabilities.max_tokens == 1_048_576
-        assert not capabilities.supports_extended_thinking
+        assert capabilities.supports_extended_thinking
 
     def test_get_capabilities_pro_model(self):
         """Test getting capabilities for Pro model with thinking support"""
diff --git a/tests/test_thinking_modes.py b/tests/test_thinking_modes.py
index 0fb4a68..4a623e6 100644
--- a/tests/test_thinking_modes.py
+++ b/tests/test_thinking_modes.py
@@ -23,6 +23,7 @@ def setup_test_env():
 class TestThinkingModes:
     """Test thinking modes across all tools"""
 
+    @patch("config.DEFAULT_THINKING_MODE_THINKDEEP", "high")
     def test_default_thinking_modes(self):
         """Test that tools have correct default thinking modes"""
         tools = [
@@ -169,6 +170,7 @@ class TestThinkingModes:
 
     @pytest.mark.asyncio
     @patch("tools.base.BaseTool.get_model_provider")
+    @patch("config.DEFAULT_THINKING_MODE_THINKDEEP", "high")
     async def test_thinking_mode_max(self, mock_get_provider):
         """Test max thinking mode (default for thinkdeep)"""
         mock_provider = create_mock_provider()