diff --git a/rpc/example/node/yarn.lock b/rpc/example/node/yarn.lock
index f91740b..20b142a 100644
--- a/rpc/example/node/yarn.lock
+++ b/rpc/example/node/yarn.lock
@@ -90,8 +90,8 @@ boom@2.x.x:
     hoek "2.x.x"
 
 brace-expansion@^1.1.7:
-  version "1.1.8"
-  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.8.tgz#c07b211c7c952ec1f8efd51a77ef0d1d3990a292"
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
   dependencies:
     balanced-match "^1.0.0"
     concat-map "0.0.1"
@@ -224,9 +224,9 @@ fstream-ignore@^1.0.5:
     inherits "2"
     minimatch "^3.0.0"
 
-fstream@^1.0.0, fstream@^1.0.10, fstream@^1.0.2:
-  version "1.0.11"
-  resolved "https://registry.yarnpkg.com/fstream/-/fstream-1.0.11.tgz#5c1fb1f117477114f0632a0eb4b71b3cb0fd3171"
+fstream@^1.0.0, fstream@^1.0.10, fstream@^1.0.12:
+  version "1.0.12"
+  resolved "https://registry.yarnpkg.com/fstream/-/fstream-1.0.12.tgz#4e8ba8ee2d48be4f7d0de505455548eae5932045"
   dependencies:
     graceful-fs "^4.1.2"
     inherits "~2.0.0"
@@ -263,6 +263,17 @@ glob@^7.0.5:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+glob@^7.1.3:
+  version "7.1.4"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.4.tgz#aa608a2f6c577ad357e1ae5a5c26d9a8d1969255"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 global@^4.3.2:
   version "4.3.2"
   resolved "https://registry.yarnpkg.com/global/-/global-4.3.2.tgz#e76989268a6c74c38908b1305b10fc0e394e9d0f"
@@ -275,8 +286,8 @@ google-protobuf@^3.0.0:
   resolved "https://registry.yarnpkg.com/google-protobuf/-/google-protobuf-3.3.0.tgz#21c15ec2fbd57c236eb684d2e18bcaeca9759b77"
 
 graceful-fs@^4.1.2:
-  version "4.1.11"
-  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
+  version "4.1.15"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.15.tgz#ffb703e1066e8a0eeaa4c8b80ba9253eeefbfb00"
 
 grpc@^1.0.0:
   version "1.4.1"
@@ -604,7 +615,13 @@ request@^2.81.0:
     tunnel-agent "^0.6.0"
     uuid "^3.0.0"
 
-rimraf@2, rimraf@^2.5.1, rimraf@^2.6.1:
+rimraf@2:
+  version "2.6.3"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.3.tgz#b2d104fe0d8fb27cf9e0a1cda8262dd3833c6cab"
+  dependencies:
+    glob "^7.1.3"
+
+rimraf@^2.5.1, rimraf@^2.6.1:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.1.tgz#c2338ec643df7a1b7fe5c54fa86f57428a55f33d"
   dependencies:
@@ -688,11 +705,11 @@ tar-pack@^3.4.0:
     uid-number "^0.0.6"
 
 tar@^2.2.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/tar/-/tar-2.2.1.tgz#8e4d2a256c0e2185c6b18ad694aec968b83cb1d1"
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/tar/-/tar-2.2.2.tgz#0ca8848562c7299b8b446ff6a4d60cdbb23edc40"
   dependencies:
     block-stream "*"
-    fstream "^1.0.2"
+    fstream "^1.0.12"
     inherits "2"
 
 tough-cookie@~2.3.0: