diff --git a/api/core/model_runtime/model_providers/anthropic/llm/claude-3-5-sonnet-20240620.yaml b/api/core/model_runtime/model_providers/anthropic/llm/claude-3-5-sonnet-20240620.yaml
index 64ae3abf64..e02c5517fe 100644
--- a/api/core/model_runtime/model_providers/anthropic/llm/claude-3-5-sonnet-20240620.yaml
+++ b/api/core/model_runtime/model_providers/anthropic/llm/claude-3-5-sonnet-20240620.yaml
@@ -26,6 +26,7 @@ parameter_rules:
     required: false
   - name: max_tokens
     use_template: max_tokens
+    required: true
     default: 8192
     min: 1
     max: 8192