diff --git a/yarn.lock b/yarn.lock
index 2b90a8c..2418ac6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -332,8 +332,10 @@ 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@^0.2.0:
   version "0.2.0"
@@ -1000,8 +1002,8 @@ base64-js@^1.0.2:
   resolved "https://registry.yarnpkg.com/base64-js/-/base64-js-1.2.0.tgz#a39992d723584811982be5e290bb6a53d86700f1"
 
 bcrypt-pbkdf@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.0.tgz#3ca76b85241c7170bf7d9703e7b9aa74630040d4"
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz#a4301d389b6a43f9b67ff3ca11a3f6637e360e9e"
   dependencies:
     tweetnacl "^0.14.3"
 
@@ -1271,7 +1273,7 @@ cli-spinners@^0.1.2:
 
 cli-truncate@^0.2.1:
   version "0.2.1"
-  resolved "http://registry.npmjs.org/cli-truncate/-/cli-truncate-0.2.1.tgz#9f15cfbb0705005369216c626ac7d05ab90dd574"
+  resolved "https://registry.npmjs.org/cli-truncate/-/cli-truncate-0.2.1.tgz#9f15cfbb0705005369216c626ac7d05ab90dd574"
   dependencies:
     slice-ansi "0.0.4"
     string-width "^1.0.1"
@@ -2092,10 +2094,11 @@ duplexer2@^0.1.4:
     readable-stream "^2.0.2"
 
 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"
@@ -2581,7 +2584,7 @@ finalhandler@0.5.0:
 
 find-cache-dir@0.1.1, find-cache-dir@^0.1.1:
   version "0.1.1"
-  resolved "http://registry.npmjs.org/find-cache-dir/-/find-cache-dir-0.1.1.tgz#c8defae57c8a52a8a784f9e31c57c742e993a0b9"
+  resolved "https://registry.npmjs.org/find-cache-dir/-/find-cache-dir-0.1.1.tgz#c8defae57c8a52a8a784f9e31c57c742e993a0b9"
   dependencies:
     commondir "^1.0.1"
     mkdirp "^0.5.1"
@@ -2733,8 +2736,8 @@ get-stream@^2.2.0:
     pinkie-promise "^2.0.0"
 
 getpass@^0.1.1:
-  version "0.1.6"
-  resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.6.tgz#283ffd9fc1256840875311c1b60e8c40187110e6"
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
   dependencies:
     assert-plus "^1.0.0"
 
@@ -3275,12 +3278,6 @@ iterall@1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/iterall/-/iterall-1.0.2.tgz#41a2e96ce9eda5e61c767ee5dc312373bb046e91"
 
-jodid25519@^1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/jodid25519/-/jodid25519-1.0.2.tgz#06d4912255093419477d425633606e0e90782967"
-  dependencies:
-    jsbn "~0.1.0"
-
 js-base64@^2.1.9:
   version "2.1.9"
   resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-2.1.9.tgz#f0e80ae039a4bd654b5f281fc93f04a914a7fcce"
@@ -3304,8 +3301,8 @@ js-yaml@~3.6.1:
     esprima "^2.6.0"
 
 jsbn@~0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.0.tgz#650987da0dd74f4ebf5a11377a2aa2d273e97dfd"
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
 
 jsesc@^1.3.0:
   version "1.3.0"
@@ -4627,7 +4624,7 @@ registry-auth-token@^3.0.1:
 
 registry-url@^3.0.3:
   version "3.1.0"
-  resolved "http://registry.npmjs.org/registry-url/-/registry-url-3.1.0.tgz#3d4ef870f73dde1d77f0cf9a381432444e174942"
+  resolved "https://registry.npmjs.org/registry-url/-/registry-url-3.1.0.tgz#3d4ef870f73dde1d77f0cf9a381432444e174942"
   dependencies:
     rc "^1.0.1"
 
@@ -4772,6 +4769,10 @@ rxjs@^5.0.0-beta.11:
   dependencies:
     symbol-observable "^1.0.1"
 
+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"
+
 sax@~1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.1.tgz#7b8e656190b228e81a66aea748480d828cd2d37a"
@@ -4910,18 +4911,17 @@ sprintf-js@~1.0.2:
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
 
 sshpk@^1.7.0:
-  version "1.10.1"
-  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.10.1.tgz#30e1a5d329244974a1af61511339d595af6638b0"
+  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"
-    jodid25519 "^1.0.0"
+    getpass "^0.1.1"
     jsbn "~0.1.0"
+    safer-buffer "^2.0.2"
     tweetnacl "~0.14.0"
 
 stackframe@^0.3.1:
@@ -5152,8 +5152,8 @@ tunnel-agent@~0.4.1:
   resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.4.3.tgz#6373db76909fe570e08d73583365ed828a74eeeb"
 
 tweetnacl@^0.14.3, tweetnacl@~0.14.0:
-  version "0.14.3"
-  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.3.tgz#3da382f670f25ded78d7b3d1792119bca0b7132d"
+  version "0.14.5"
+  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
 
 type-check@~0.3.2:
   version "0.3.2"