diff --git a/src/google/adk/models/anthropic_llm.py b/src/google/adk/models/anthropic_llm.py
index 0c635e2..9fbaaee 100644
--- a/src/google/adk/models/anthropic_llm.py
+++ b/src/google/adk/models/anthropic_llm.py
@@ -208,7 +208,7 @@ class Claude(BaseLlm):
   @staticmethod
   @override
   def supported_models() -> list[str]:
-    return [r"claude-3-.*"]
+    return [r"claude-3-.*", r"claude-.*-4.*"]
 
   @override
   async def generate_content_async(
diff --git a/tests/unittests/models/test_models.py b/tests/unittests/models/test_models.py
index fb21171..70246c7 100644
--- a/tests/unittests/models/test_models.py
+++ b/tests/unittests/models/test_models.py
@@ -46,6 +46,8 @@ def test_match_gemini_family(model_name):
         'claude-3-haiku@20240307',
         'claude-3-opus@20240229',
         'claude-3-sonnet@20240229',
+        'claude-sonnet-4@20250514',
+        'claude-opus-4@20250514',
     ],
 )
 def test_match_claude_family(model_name):