diff --git a/instrumentation-genai/opentelemetry-instrumentation-google-genai/CHANGELOG.md b/instrumentation-genai/opentelemetry-instrumentation-google-genai/CHANGELOG.md
index 85f00eebd6..13e8d32fcd 100644
--- a/instrumentation-genai/opentelemetry-instrumentation-google-genai/CHANGELOG.md
+++ b/instrumentation-genai/opentelemetry-instrumentation-google-genai/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+- Minor change to check LRU cache in Completion Hook before acquiring semaphore/thread ([#3907](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3907)).
+
 ## Version 0.4b0 (2025-10-16)
 
 - Implement the new semantic convention changes made in https://github.com/open-telemetry/semantic-conventions/pull/2179.
diff --git a/util/opentelemetry-util-genai/src/opentelemetry/util/genai/_upload/completion_hook.py b/util/opentelemetry-util-genai/src/opentelemetry/util/genai/_upload/completion_hook.py
index 42c62cd789..6e88b5e389 100644
--- a/util/opentelemetry-util-genai/src/opentelemetry/util/genai/_upload/completion_hook.py
+++ b/util/opentelemetry-util-genai/src/opentelemetry/util/genai/_upload/completion_hook.py
@@ -149,6 +149,9 @@ def done(future: Future[None]) -> None:
             path,
             contents_hashed_to_filename,
         ), json_encodeable in upload_data.items():
+            if contents_hashed_to_filename and path in self.lru_dict:
+                self.lru_dict.move_to_end(path)
+                continue
             # could not acquire, drop data
             if not self._semaphore.acquire(blocking=False):  # pylint: disable=consider-using-with
                 _logger.warning(