diff --git a/package.json b/package.json
index 433edd01d..07da29a93 100644
--- a/package.json
+++ b/package.json
@@ -83,6 +83,9 @@
   "engines": {
     "node": "10.8.0"
   },
+  "resolutions": {
+    "**/event-stream": "3.3.4"
+  },
   "devDependencies": {
     "@types/chai": "^4.0.4",
     "@types/chai-as-promised": "^7.1.0",
diff --git a/yarn.lock b/yarn.lock
index a0d90c286..a30b9b703 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1316,7 +1316,7 @@ duplexer3@^0.1.4:
 
 duplexer@~0.1.1:
   version "0.1.1"
-  resolved "https://registry.yarnpkg.com/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"
+  resolved "http://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"
 
 duplexify@^3.5.0, duplexify@^3.6.0:
   version "3.6.0"
@@ -1401,7 +1401,7 @@ etag@~1.8.1:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
 
-event-stream@~3.3.0:
+event-stream@3.3.4, event-stream@~3.3.0:
   version "3.3.4"
   resolved "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
   dependencies:
@@ -2632,7 +2632,7 @@ map-cache@^0.2.2:
 
 map-stream@~0.1.0:
   version "0.1.0"
-  resolved "https://registry.yarnpkg.com/map-stream/-/map-stream-0.1.0.tgz#e56aa94c4c8055a16404a0674b78f215f7c8e194"
+  resolved "http://registry.npmjs.org/map-stream/-/map-stream-0.1.0.tgz#e56aa94c4c8055a16404a0674b78f215f7c8e194"
 
 map-visit@^1.0.0:
   version "1.0.0"
@@ -3219,7 +3219,7 @@ pathval@^1.0.0:
 
 pause-stream@0.0.11:
   version "0.0.11"
-  resolved "https://registry.yarnpkg.com/pause-stream/-/pause-stream-0.0.11.tgz#fe5a34b0cbce12b5aa6a2b403ee2e73b602f1445"
+  resolved "http://registry.npmjs.org/pause-stream/-/pause-stream-0.0.11.tgz#fe5a34b0cbce12b5aa6a2b403ee2e73b602f1445"
   dependencies:
     through "~2.3"
 
@@ -3926,7 +3926,7 @@ split-string@^3.0.1, split-string@^3.0.2:
 
 split@0.3:
   version "0.3.3"
-  resolved "https://registry.yarnpkg.com/split/-/split-0.3.3.tgz#cd0eea5e63a211dfff7eb0f091c4133e2d0dd28f"
+  resolved "http://registry.npmjs.org/split/-/split-0.3.3.tgz#cd0eea5e63a211dfff7eb0f091c4133e2d0dd28f"
   dependencies:
     through "2"
 
@@ -3993,7 +3993,7 @@ stealthy-require@^1.1.0:
 
 stream-combiner@~0.0.4:
   version "0.0.4"
-  resolved "https://registry.yarnpkg.com/stream-combiner/-/stream-combiner-0.0.4.tgz#4d5e433c185261dde623ca3f44c586bcf5c4ad14"
+  resolved "http://registry.npmjs.org/stream-combiner/-/stream-combiner-0.0.4.tgz#4d5e433c185261dde623ca3f44c586bcf5c4ad14"
   dependencies:
     duplexer "~0.1.1"
 
@@ -4142,7 +4142,7 @@ through2@^2.0.0, through2@^2.0.3:
 
 through@2, through@~2.3, through@~2.3.1:
   version "2.3.8"
-  resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
+  resolved "http://registry.npmjs.org/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
 
 timed-out@4.0.1, timed-out@^4.0.0, timed-out@^4.0.1:
   version "4.0.1"