diff --git a/package.json b/package.json
index 1761edbb..33a7f5d5 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
   "dependencies": {
     "babel-runtime": "6.26.0",
     "commander": "2.20.3",
-    "debug": "4.2.0",
+    "debug": "4.3.1",
     "koa": "2.13.0",
     "koa-bodyparser": "4.3.0",
     "koa-mount": "4.0.0",
diff --git a/yarn.lock b/yarn.lock
index 9fadc496..d012a796 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2979,10 +2979,10 @@ debug@3.1.0, debug@^3.1.0, debug@~3.1.0:
   dependencies:
     ms "2.0.0"
 
-debug@4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-4.2.0.tgz#7f150f93920e94c58f5574c2fd01a3110effe7f1"
-  integrity sha512-IX2ncY78vDTjZMFUdmsvIRFY2Cf4FnD0wRs+nQwJU8Lu99/tPFdb0VybiiMTPe3I6rQmwsqQqRBvxU+bZ/I8sg==
+debug@4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.1.tgz#f0d229c505e0c6d8c49ac553d1b13dc183f6b2ee"
+  integrity sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==
   dependencies:
     ms "2.1.2"