diff --git a/eng/common/testproxy/target_version.txt b/eng/common/testproxy/target_version.txt
index cefa0fb9592d..61a8b83485f7 100644
--- a/eng/common/testproxy/target_version.txt
+++ b/eng/common/testproxy/target_version.txt
@@ -1 +1 @@
-1.0.0-dev.20240823.1
+1.0.0-dev.20240919.1