diff --git a/package.json b/package.json
index e11cc6e..828c74d 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "react-scripts": "2.0.3",
     "redux": "^4.0.0",
     "tachyons": "^4.11.1",
-    "terser": "3.14.1"
+    "terser": "4.8.1"
   },
   "scripts": {
     "start": "react-scripts start",
diff --git a/yarn.lock b/yarn.lock
index e6ad2ca..0ad60aa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1988,9 +1988,10 @@ commander@2.17.x, commander@~2.17.1:
   version "2.17.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
 
-commander@^2.11.0:
-  version "2.19.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.19.0.tgz#f6198aa84e5b83c46054b94ddedbfed5ee9ff12a"
+commander@^2.11.0, commander@^2.20.0:
+  version "2.20.3"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
+  integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
 commander@~2.13.0:
   version "2.13.0"
@@ -7625,9 +7626,10 @@ source-map-support@^0.4.15:
   dependencies:
     source-map "^0.5.6"
 
-source-map-support@^0.5.6, source-map-support@~0.5.6:
-  version "0.5.9"
-  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.9.tgz#41bc953b2534267ea2d605bccfa7bfa3111ced5f"
+source-map-support@^0.5.6, source-map-support@~0.5.12, source-map-support@~0.5.6:
+  version "0.5.21"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.21.tgz#04fe7c7f9e1ed2d662233c28cb2b35b9f63f6e4f"
+  integrity sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==
   dependencies:
     buffer-from "^1.0.0"
     source-map "^0.6.0"
@@ -7959,13 +7961,14 @@ terser-webpack-plugin@1.1.0:
     webpack-sources "^1.1.0"
     worker-farm "^1.5.2"
 
-terser@3.14.1:
-  version "3.14.1"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-3.14.1.tgz#cc4764014af570bc79c79742358bd46926018a32"
+terser@4.8.1:
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.1.tgz#a00e5634562de2239fd404c649051bf6fc21144f"
+  integrity sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==
   dependencies:
-    commander "~2.17.1"
+    commander "^2.20.0"
     source-map "~0.6.1"
-    source-map-support "~0.5.6"
+    source-map-support "~0.5.12"
 
 terser@^3.8.1:
   version "3.10.1"