diff --git a/backend/yarn.lock b/backend/yarn.lock
index 5077ab9..dc74cf2 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -633,7 +633,7 @@ date-fns@^2.0.0-beta.5:
   resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-2.0.0-beta.5.tgz#90885db3772802d55519cd12acd49de56aca1059"
   integrity sha512-GS5yi964NDFNoja9yOdWFj9T97T67yLrUeJZgddHaVfc/6tHWtX7RXocuubmZkNzrZUZ9BqBOW7jTR5OoWjJ1w==
 
-debug@2.6.9, debug@^2.2.0, debug@^2.6.9:
+debug@2.6.9, debug@^2.6.9:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
@@ -3234,11 +3234,9 @@ umzug@^2.1.0:
     bluebird "^3.5.3"
 
 undefsafe@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/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==
 
 underscore@^1.7.0:
   version "1.9.2"