diff --git a/yarn.lock b/yarn.lock
index 727f6e4..3acd7c2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -249,8 +249,10 @@ asn1.js@^4.0.0:
     minimalistic-assert "^1.0.0"
 
 asn1@~0.2.3:
-  version "0.2.3"
-  resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.3.tgz#dac8787713c9966849fc8180777ebe9c1ddf3b86"
+  version "0.2.4"
+  resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.4.tgz#8d2475dfab553bb33e77b54e59e880bb8ce23136"
+  dependencies:
+    safer-buffer "~2.1.0"
 
 assert-plus@1.0.0, assert-plus@^1.0.0:
   version "1.0.0"
@@ -1012,8 +1014,8 @@ batch@0.6.1:
   resolved "https://registry.yarnpkg.com/batch/-/batch-0.6.1.tgz#dc34314f4e679318093fc760272525f94bf25c16"
 
 bcrypt-pbkdf@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz#63bc5dcb61331b92bc05fd528953c33462a06f8d"
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz#a4301d389b6a43f9b67ff3ca11a3f6637e360e9e"
   dependencies:
     tweetnacl "^0.14.3"
 
@@ -1333,7 +1335,7 @@ caniuse-lite@^1.0.30000748, caniuse-lite@^1.0.30000784:
 
 capture-stack-trace@^1.0.0:
   version "1.0.0"
-  resolved "http://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.0.tgz#4a6fa07399c26bba47f0b2496b4d0fb408c5550d"
+  resolved "https://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.0.tgz#4a6fa07399c26bba47f0b2496b4d0fb408c5550d"
 
 case-sensitive-paths-webpack-plugin@2.1.1:
   version "2.1.1"
@@ -1668,7 +1670,7 @@ create-ecdh@^4.0.0:
 
 create-error-class@^3.0.1:
   version "3.0.2"
-  resolved "http://registry.npmjs.org/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
+  resolved "https://registry.npmjs.org/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
   dependencies:
     capture-stack-trace "^1.0.0"
 
@@ -2103,10 +2105,11 @@ duplexer@^0.1.1:
   resolved "https://registry.yarnpkg.com/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"
 
 ecc-jsbn@~0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz#0fc73a9ed5f0d53c38193398523ef7e543777505"
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"
   dependencies:
     jsbn "~0.1.0"
+    safer-buffer "^2.1.0"
 
 ee-first@1.1.1:
   version "1.1.1"
@@ -5699,7 +5702,7 @@ react@^16.2.0:
 
 read-all-stream@^3.0.0:
   version "3.1.0"
-  resolved "http://registry.npmjs.org/read-all-stream/-/read-all-stream-3.1.0.tgz#35c3e177f2078ef789ee4bfafa4373074eaef4fa"
+  resolved "https://registry.npmjs.org/read-all-stream/-/read-all-stream-3.1.0.tgz#35c3e177f2078ef789ee4bfafa4373074eaef4fa"
   dependencies:
     pinkie-promise "^2.0.0"
     readable-stream "^2.0.0"
@@ -6055,6 +6058,10 @@ safe-buffer@5.1.1, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, s
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
+safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+
 sane@~1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/sane/-/sane-1.6.0.tgz#9610c452307a135d29c1fdfe2547034180c46775"
@@ -6337,17 +6344,17 @@ sprintf-js@~1.0.2:
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
 
 sshpk@^1.7.0:
-  version "1.13.1"
-  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.13.1.tgz#512df6da6287144316dc4c18fe1cf1d940739be3"
+  version "1.16.1"
+  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.16.1.tgz#fb661c0bef29b39db40769ee39fa70093d6f6877"
   dependencies:
     asn1 "~0.2.3"
     assert-plus "^1.0.0"
-    dashdash "^1.12.0"
-    getpass "^0.1.1"
-  optionalDependencies:
     bcrypt-pbkdf "^1.0.0"
+    dashdash "^1.12.0"
     ecc-jsbn "~0.1.1"
+    getpass "^0.1.1"
     jsbn "~0.1.0"
+    safer-buffer "^2.0.2"
     tweetnacl "~0.14.0"
 
 statehood@6.x.x: