diff --git a/node_practice/yarn.lock b/node_practice/yarn.lock
index 408957d..fa3ce50 100644
--- a/node_practice/yarn.lock
+++ b/node_practice/yarn.lock
@@ -161,10 +161,10 @@ d@~0.1.1:
     es5-ext "~0.10.2"
 
 debug@^2.1.1:
-  version "2.6.3"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.3.tgz#0f7eb8c30965ec08c72accfa0130c8b79984141d"
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   dependencies:
-    ms "0.7.2"
+    ms "2.0.0"
 
 deep-is@~0.1.3:
   version "0.1.3"
@@ -591,9 +591,9 @@ mkdirp@^0.5.0, mkdirp@^0.5.1:
   dependencies:
     minimist "0.0.8"
 
-ms@0.7.2:
-  version "0.7.2"
-  resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.2.tgz#ae25cf2512b3885a1d95d7f037868d8431124765"
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
 mute-stream@0.0.5:
   version "0.0.5"