diff --git a/yarn.lock b/yarn.lock
index 86fde55..d1f029c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -217,8 +217,8 @@ doctrine@^2.0.0:
     isarray "^1.0.0"
 
 ecstatic@^2.0.0:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/ecstatic/-/ecstatic-2.2.1.tgz#b5087fad439dd9dd49d31e18131454817fe87769"
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/ecstatic/-/ecstatic-2.2.2.tgz#1c7969b7a8893a04852e9373edeeb1d62809d393"
   dependencies:
     he "^1.1.1"
     mime "^1.2.11"
@@ -418,8 +418,8 @@ has-flag@^2.0.0:
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-2.0.0.tgz#e8207af1cc7b30d446cc70b734b5e8be18f88d51"
 
 he@^1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
 
 http-proxy@^1.8.1:
   version "1.16.2"
@@ -571,8 +571,8 @@ lodash@^4.0.0, lodash@^4.17.4, lodash@^4.3.0:
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
 mime@^1.2.11:
-  version "1.3.4"
-  resolved "https://registry.yarnpkg.com/mime/-/mime-1.3.4.tgz#115f9e3b6b3daf2959983cb38f149a2d40eb5d53"
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
 
 mimic-fn@^1.0.0:
   version "1.1.0"
@@ -853,8 +853,8 @@ union@~0.4.3:
     qs "~2.3.3"
 
 url-join@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/url-join/-/url-join-2.0.2.tgz#c072756967ad24b8b59e5741551caac78f50b8b7"
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/url-join/-/url-join-2.0.5.tgz#5af22f18c052a000a48d7b82c5e9c2e2feeda728"
 
 util-deprecate@~1.0.1:
   version "1.0.2"