diff --git a/instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/__init__.py b/instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/__init__.py
index 85ac407fab..21e102dcca 100644
--- a/instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/__init__.py
+++ b/instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/__init__.py
@@ -259,10 +259,7 @@ def response_hook(span: Span, status: str, response_headers: List):
         from importlib import metadata
     except ImportError:
         import importlib_metadata as metadata
-    try:
-        flask_version = metadata.version("flask")
-    except (ImportError, metadata.PackageNotFoundError):
-        flask_version = "unknown"
+    flask_version = metadata.version("flask")
 
 from opentelemetry.instrumentation.instrumentor import BaseInstrumentor
 from opentelemetry.instrumentation.propagators import (