diff --git "a/\347\254\254\345\215\201\344\270\211\350\212\202express/yarn.lock" "b/\347\254\254\345\215\201\344\270\211\350\212\202express/yarn.lock"
index 24bdf72..5417367 100644
--- "a/\347\254\254\345\215\201\344\270\211\350\212\202express/yarn.lock"
+++ "b/\347\254\254\345\215\201\344\270\211\350\212\202express/yarn.lock"
@@ -222,7 +222,7 @@ crypto-random-string@^1.0.0:
   resolved "https://registry.npmjs.org/crypto-random-string/-/crypto-random-string-1.0.0.tgz#a230f64f568310e1498009940790ec99545bca7e"
   integrity sha1-ojD2T1aDEOFJgAmUB5DsmVRbyn4=
 
-debug@2.6.9, debug@^2.2.0:
+debug@2.6.9:
   version "2.6.9"
   resolved "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
@@ -971,11 +971,9 @@ type-is@~1.6.17, type-is@~1.6.18:
     mime-types "~2.1.24"
 
 undefsafe@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.2.tgz#225f6b9e0337663e0d8e7cfd686fc2836ccace76"
-  integrity sha1-Il9rngM3Zj4Njnz9aG/Cg2zKznY=
-  dependencies:
-    debug "^2.2.0"
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.5.tgz#38733b9327bdcd226db889fb723a6efd162e6e2c"
+  integrity sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA==
 
 unique-string@^1.0.0:
   version "1.0.0"