diff --git a/tools/requirements_lock.txt b/tools/requirements_lock.txt
index 50b1a7a8b91..99eb79a4d1c 100644
--- a/tools/requirements_lock.txt
+++ b/tools/requirements_lock.txt
@@ -23,9 +23,9 @@ attrs==25.3.0 \
     #   cyclopts
     #   jsonschema
     #   referencing
-authlib==1.6.2 \
-    --hash=sha256:2dd5571013cacf6b15f7addce03ed057ffdf629e9e81bacd9c08455a190e9b57 \
-    --hash=sha256:3bde83ac0392683eeef589cd5ab97e63cbe859e552dd75dca010548e79202cb1
+authlib==1.6.4 \
+    --hash=sha256:104b0442a43061dc8bc23b133d1d06a2b0a9c2e3e33f34c4338929e816287649 \
+    --hash=sha256:39313d2a2caac3ecf6d8f95fbebdfd30ae6ea6ae6a6db794d976405fdd9aa796
     # via fastmcp
 bazel-runfiles==1.5.1 \
     --hash=sha256:b7c9e93a31dbaf20d49817df2051b64acde870fcc8508d5796e290a101510773