diff --git a/packages/autorest.python/test/vanilla/legacy/requirements.txt b/packages/autorest.python/test/vanilla/legacy/requirements.txt
index 65d5b0d4dd..2ecc3a7987 100644
--- a/packages/autorest.python/test/vanilla/legacy/requirements.txt
+++ b/packages/autorest.python/test/vanilla/legacy/requirements.txt
@@ -6,7 +6,7 @@ pytest-asyncio==0.14.0;python_full_version>="3.5.2"
 async_generator;python_full_version>="3.5.2"
 isodate==0.6.1
 msrest==0.7.1
-azure-core==1.37.0
+azure-core==1.38.0
 -e ./Expected/AcceptanceTests/AdditionalProperties
 -e ./Expected/AcceptanceTests/Anything
 -e ./Expected/AcceptanceTests/BodyArray