diff --git a/client/package.json b/client/package.json
index c200843d..624290b2 100644
--- a/client/package.json
+++ b/client/package.json
@@ -18,7 +18,7 @@
   },
   "devDependencies": {
     "@rollup/plugin-json": "^4.1.0",
-    "rollup": "^1.12.1",
+    "rollup": "^3.29.5",
     "rollup-plugin-node-resolve": "^5.0.0",
     "rollup-plugin-terser": "^4.0.4",
     "tslint": "^5.16.0",
diff --git a/client/rollup.config.js b/client/rollup.config.mjs
similarity index 100%
rename from client/rollup.config.js
rename to client/rollup.config.mjs
diff --git a/client/yarn.lock b/client/yarn.lock
index b4f6419b..d22cda5c 100644
--- a/client/yarn.lock
+++ b/client/yarn.lock
@@ -371,7 +371,7 @@
   dependencies:
     "@types/node" "*"
 
-"@types/node@*", "@types/node@^12.0.2", "@types/node@^12.12.6", "@types/node@^12.6.1":
+"@types/node@*", "@types/node@^12.12.6", "@types/node@^12.6.1":
   version "12.20.55"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.20.55.tgz#c329cbd434c42164f846b909bd6f85b5537f6240"
   integrity sha512-J8xLz7q2OFulZ2cyGTLE1TbbZcjpno7FaN6zdJNrgAdrJ+DZzh/uFR6YrTb4C+nXakvud8Q4+rbhoIWlYQbUFQ==
@@ -453,11 +453,6 @@ accepts@~1.3.8:
     mime-types "~2.1.34"
     negotiator "0.6.3"
 
-acorn@^6.1.1:
-  version "6.4.1"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
-  integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
-
 aes-js@3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-3.0.0.tgz#e21df10ad6c2053295bcbb8dab40b09dbea87e4d"
@@ -1806,6 +1801,11 @@ fs.realpath@^1.0.0:
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
   integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
 
+fsevents@~2.3.2:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.3.3.tgz#cac6407785d03675a2a5e1a5305c697b347d90d6"
+  integrity sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==
+
 function-bind@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
@@ -3111,14 +3111,12 @@ rollup-pluginutils@^2.7.0:
     estree-walker "^0.6.0"
     micromatch "^3.1.10"
 
-rollup@^1.12.1:
-  version "1.12.1"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.12.1.tgz#02148d3d79f819b418a2f4c374f859fed56ae40c"
-  integrity sha512-6CL0c+HxqEY9/8G+7mYIvor0tt60mVC64410/1DeaGWZCFAvcY8ClT0bsnTxECd6vR004CMm0X2yBZmod5gWjw==
-  dependencies:
-    "@types/estree" "0.0.39"
-    "@types/node" "^12.0.2"
-    acorn "^6.1.1"
+rollup@^3.29.5:
+  version "3.29.5"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-3.29.5.tgz#8a2e477a758b520fb78daf04bca4c522c1da8a54"
+  integrity sha512-GVsDdsbJzzy4S/v3dqWPJ7EfvZJfCHiDqe80IyrF59LYuP+e6U1LJoUqeuqRbwAWoMNoXivMNeNAOf5E22VA1w==
+  optionalDependencies:
+    fsevents "~2.3.2"
 
 safe-buffer@5.2.1, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@^5.2.0, safe-buffer@^5.2.1, safe-buffer@~5.2.0:
   version "5.2.1"