diff --git a/src/strands/models/anthropic.py b/src/strands/models/anthropic.py
index 975fca3e9..29cb40d40 100644
--- a/src/strands/models/anthropic.py
+++ b/src/strands/models/anthropic.py
@@ -55,7 +55,7 @@ class AnthropicConfig(TypedDict, total=False):
                 For a complete list of supported parameters, see https://docs.anthropic.com/en/api/messages.
         """
 
-        max_tokens: Required[str]
+        max_tokens: Required[int]
         model_id: Required[str]
         params: Optional[dict[str, Any]]