diff --git a/yarn.lock b/yarn.lock
index 085476d..1cfcfde 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2652,16 +2652,16 @@ delegates@^1.0.0:
   resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
   integrity sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=
 
-depd@^1.1.2, depd@~1.1.2:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
-  integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
-
-depd@~2.0.0:
+depd@^2.0.0, depd@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/depd/-/depd-2.0.0.tgz#b696163cc757560d09cf22cc8fad1571b79e76df"
   integrity sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw==
 
+depd@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
+  integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
+
 des.js@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/des.js/-/des.js-1.0.1.tgz#5382142e1bdc53f85d86d53e5f4aa7deb91e0843"
@@ -4007,9 +4007,9 @@ koa-convert@^1.2.0:
     koa-compose "^3.0.0"
 
 koa@^2.13.0:
-  version "2.13.0"
-  resolved "https://registry.yarnpkg.com/koa/-/koa-2.13.0.tgz#25217e05efd3358a7e5ddec00f0a380c9b71b501"
-  integrity sha512-i/XJVOfPw7npbMv67+bOeXr3gPqOAw6uh5wFyNs3QvJ47tUx3M3V9rIE0//WytY42MKz4l/MXKyGkQ2LQTfLUQ==
+  version "2.13.1"
+  resolved "https://registry.yarnpkg.com/koa/-/koa-2.13.1.tgz#6275172875b27bcfe1d454356a5b6b9f5a9b1051"
+  integrity sha512-Lb2Dloc72auj5vK4X4qqL7B5jyDPQaZucc9sR/71byg7ryoD1NCaCm63CShk9ID9quQvDEi1bGR/iGjCG7As3w==
   dependencies:
     accepts "^1.3.5"
     cache-content-type "^1.0.0"
@@ -4018,7 +4018,7 @@ koa@^2.13.0:
     cookies "~0.8.0"
     debug "~3.1.0"
     delegates "^1.0.0"
-    depd "^1.1.2"
+    depd "^2.0.0"
     destroy "^1.0.4"
     encodeurl "^1.0.2"
     escape-html "^1.0.3"