diff --git a/yarn.lock b/yarn.lock
index 312f320..c773bd2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -551,18 +551,12 @@ dashdash@^1.12.0:
   dependencies:
     assert-plus "^1.0.0"
 
-debug@2.6.9, debug@^2.3.3:
+debug@2.6.9, debug@^2.2.0, debug@^2.3.3, debug@^2.4.5, debug@~2.6.4, debug@~2.6.6:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   dependencies:
     ms "2.0.0"
 
-debug@^2.2.0, debug@^2.4.5, debug@~2.6.4, debug@~2.6.6:
-  version "2.6.8"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
-  dependencies:
-    ms "2.0.0"
-
 debug@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
@@ -2693,10 +2687,8 @@ ultron@~1.1.0:
   resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.1.0.tgz#b07a2e6a541a815fc6a34ccd4533baec307ca864"
 
 undefsafe@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.1.tgz#03b2f2a16c94556e14b2edef326cd66aaf82707a"
-  dependencies:
-    debug "^2.2.0"
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.5.tgz#38733b9327bdcd226db889fb723a6efd162e6e2c"
 
 union-value@^1.0.0:
   version "1.0.0"