diff --git a/yarn.lock b/yarn.lock
index ed86c51..e6ec474 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3567,12 +3567,6 @@ jest@^20.0.4:
   dependencies:
     jest-cli "^20.0.4"
 
-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-tokens@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.1.tgz#08e9f132484a2c45a30907e9dc4d5567b7f114d7"
@@ -5221,7 +5215,7 @@ safe-regex@^1.1.0:
   dependencies:
     ret "~0.1.10"
 
-"safer-buffer@>= 2.1.2 < 3":
+"safer-buffer@>= 2.1.2 < 3", safer-buffer@^2.0.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
 
@@ -5536,18 +5530,17 @@ sprintf-js@~1.0.2:
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
 
 sshpk@^1.7.0:
-  version "1.13.0"
-  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.13.0.tgz#ff2a3e4fd04497555fed97b39a0fd82fafb3a33c"
+  version "1.16.0"
+  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.16.0.tgz#1d4963a2fbffe58050aa9084ca20be81741c07de"
   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"
 
 ssri@^5.2.4: