diff --git a/oss/node-koa/yarn.lock b/oss/node-koa/yarn.lock
index 246cf2a..c66ac33 100644
--- a/oss/node-koa/yarn.lock
+++ b/oss/node-koa/yarn.lock
@@ -43,8 +43,8 @@ cookies@~0.7.0:
     keygrip "~1.0.1"
 
 debug@*, debug@^2.6.0:
-  version "2.6.8"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   dependencies:
     ms "2.0.0"