diff --git a/samples/adk-sql-agent/requirements.txt b/samples/adk-sql-agent/requirements.txt
index 1ae77dfd..f46a98f1 100644
--- a/samples/adk-sql-agent/requirements.txt
+++ b/samples/adk-sql-agent/requirements.txt
@@ -32,9 +32,9 @@ attrs==25.4.0 \
     # via
     #   jsonschema
     #   referencing
-authlib==1.6.5 \
-    --hash=sha256:3e0e0507807f842b02175507bdee8957a1d5707fd4afb17c32fb43fee90b6e3a \
-    --hash=sha256:6aaf9c79b7cc96c900f0b284061691c5d4e61221640a948fe690b556a6d6d10b
+authlib==1.6.6 \
+    --hash=sha256:45770e8e056d0f283451d9996fbb59b70d45722b45d854d58f32878d0a40c38e \
+    --hash=sha256:7d9e9bc535c13974313a87f53e8430eb6ea3d1cf6ae4f6efcd793f2e949143fd
     # via google-adk
 cachetools==6.2.1 \
     --hash=sha256:09868944b6dde876dfd44e1d47e18484541eaf12f26f29b7af91b26cc892d701 \