diff --git a/transitrichhousing/package.json b/transitrichhousing/package.json
index f994bfe..65a4e70 100644
--- a/transitrichhousing/package.json
+++ b/transitrichhousing/package.json
@@ -1,6 +1,6 @@
 {
     "dependencies": {
-        "async": "^2.4.1",
+        "async": "^3.2.2",
         "geojson": "^0.4.1",
         "jsonfile": "^3.0.0",
         "st": "^1.2.0"
diff --git a/transitrichhousing/yarn.lock b/transitrichhousing/yarn.lock
index e240a3e..f5a6cde 100644
--- a/transitrichhousing/yarn.lock
+++ b/transitrichhousing/yarn.lock
@@ -8,11 +8,9 @@ async-cache@~1.1.0:
   dependencies:
     lru-cache "^4.0.0"
 
-async@^2.4.1:
-  version "2.6.0"
-  resolved "https://registry.yarnpkg.com/async/-/async-2.6.0.tgz#61a29abb6fcc026fea77e56d1c6ec53a795951f4"
-  dependencies:
-    lodash "^4.14.0"
+async@^3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/async/-/async-3.2.2.tgz#2eb7671034bb2194d45d30e31e24ec7e7f9670cd"
 
 bl@~1.2.1:
   version "1.2.2"
@@ -51,10 +49,6 @@ jsonfile@^3.0.0:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
-lodash@^4.14.0:
-  version "4.17.5"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
-
 lru-cache@^4.0.0:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.2.tgz#45234b2e6e2f2b33da125624c4664929a0224c3f"