diff --git a/onnxruntime/core/providers/coreml/coreml_execution_provider.cc b/onnxruntime/core/providers/coreml/coreml_execution_provider.cc
index ee1f39e5723d5..847e6f6fae87b 100644
--- a/onnxruntime/core/providers/coreml/coreml_execution_provider.cc
+++ b/onnxruntime/core/providers/coreml/coreml_execution_provider.cc
@@ -65,6 +65,11 @@ CoreMLExecutionProvider::GetCapability(const onnxruntime::GraphViewer& graph_vie
         }
         if (main_graph->GetModel().MetaData().count(kCOREML_CACHE_KEY) > 0) {
           user_provided_key = graph_viewer.GetGraph().GetModel().MetaData().at(kCOREML_CACHE_KEY);
+          if (user_provided_key.size() > 32 ||
+              std::count_if(user_provided_key.begin(), user_provided_key.end(),
+                            [](unsigned char c) { return std::isalnum(c); })) {
+            user_provided_key = std::to_string(std::hash<std::string>{}(user_provided_key));
+          }
         } else {
           // model_hash is a 64-bit hash value of model_path if model_path is not empty,
           // otherwise it hashes the graph input names and all the node output names.