diff --git a/package.json b/package.json
index 95e4515fc..5e00ea6a5 100644
--- a/package.json
+++ b/package.json
@@ -57,6 +57,7 @@
   "dependencies": {
     "accepts": "^1.3.3",
     "app-module-path": "^2.2.0",
+    "async": "^2.5.0",
     "bcrypt": "^1.0.2",
     "body-parser": "^1.17.1",
     "bowser": "^1.7.0",
diff --git a/plugins/talk-plugin-permalink/yarn.lock b/plugins/talk-plugin-permalink/yarn.lock
new file mode 100644
index 000000000..fb57ccd13
--- /dev/null
+++ b/plugins/talk-plugin-permalink/yarn.lock
@@ -0,0 +1,4 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
diff --git a/yarn.lock b/yarn.lock
index 92edf11b5..317d83e85 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -358,6 +358,12 @@ async@^2.0.1, async@^2.1.2, async@^2.1.4:
   dependencies:
     lodash "^4.14.0"
 
+async@^2.5.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.5.0.tgz#843190fd6b7357a0b9e1c956edddd5ec8462b54d"
+  dependencies:
+    lodash "^4.14.0"
+
 async@~0.9.0:
   version "0.9.2"
   resolved "https://registry.yarnpkg.com/async/-/async-0.9.2.tgz#aea74d5e61c1f899613bf64bda66d4c78f2fd17d"