diff --git a/token-swap/js/package-lock.json b/token-swap/js/package-lock.json
index 040214dd..fed1ca57 100644
--- a/token-swap/js/package-lock.json
+++ b/token-swap/js/package-lock.json
@@ -15,9 +15,9 @@
       }
     },
     "@babel/cli": {
-      "version": "7.10.5",
-      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.10.5.tgz",
-      "integrity": "sha512-j9H9qSf3kLdM0Ao3aGPbGZ73mEA9XazuupcS6cDGWuiyAcANoguhP0r2Lx32H5JGw4sSSoHG3x/mxVnHgvOoyA==",
+      "version": "7.11.5",
+      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.11.5.tgz",
+      "integrity": "sha512-0umMDxxdEZ98EMZtS9Wgnaf4NdgqBcQHaGYaMfAmP+ZicVglZ2+QZwoHNacfnUq4hCmC1V7Ap5Phq7FInpWrWg==",
       "dev": true,
       "requires": {
         "chokidar": "^2.1.8",
@@ -28,7 +28,7 @@
         "lodash": "^4.17.19",
         "make-dir": "^2.1.0",
         "slash": "^2.0.0",
-        "source-map": "^0.5.0"
+        "source-map": "^0.6.1"
       },
       "dependencies": {
         "commander": {
@@ -36,6 +36,12 @@
           "resolved": "https://registry.npmjs.org/commander/-/commander-4.1.1.tgz",
           "integrity": "sha512-NOKm8xhkzAjzFx8B2v5OAHT+u5pRQc2UCa2Vq9jYL/31o2wi9mxBA7LIFs3sV5VSC49z6pEhfbMULvShKj26WA==",
           "dev": true
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
         }
       }
     },
diff --git a/token-swap/js/package.json b/token-swap/js/package.json
index 20820332..f1c4dd20 100644
--- a/token-swap/js/package.json
+++ b/token-swap/js/package.json
@@ -37,7 +37,7 @@
     "mkdirp-promise": "^5.0.1"
   },
   "devDependencies": {
-    "@babel/cli": "^7.10.5",
+    "@babel/cli": "^7.11.5",
     "@babel/core": "^7.11.4",
     "@babel/node": "^7.10.5",
     "@babel/plugin-proposal-class-properties": "^7.10.4",