diff --git a/pyproject.toml b/pyproject.toml
index c734220..7257466 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -78,7 +78,7 @@ dependencies = [
 [project.optional-dependencies]
 # Google ADK 支持
 adk = [
-    "google-adk>=1.34.0,<2.0.0",
+    "google-adk>=1.34.0,<3.0.0",
     "litellm>=1.0.0",
     "json_repair>=0.25.0",  # 用于修复大模型输出的非法 JSON
 ]