diff --git a/modules/core/package.json b/modules/core/package.json
index 5f5403ab3e..a50b55dbba 100644
--- a/modules/core/package.json
+++ b/modules/core/package.json
@@ -113,7 +113,7 @@
     "sinon": "^6.3.5",
     "sjcl": "^1.0.8",
     "supertest": "^3.0.0",
-    "terser": "^3.16.1",
+    "terser": "^4.8.1",
     "terser-webpack-plugin": "^1.2.3",
     "webpack": "^4.29.6",
     "webpack-cli": "^3.2.3"
diff --git a/yarn.lock b/yarn.lock
index 59379f5177..7aeabdcaac 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4936,7 +4936,7 @@ commander@2.17.x:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
   integrity sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==
 
-commander@^2.14.1, commander@^2.19.0, commander@^2.20.0, commander@^2.8.1, commander@^2.9.0:
+commander@^2.14.1, commander@^2.20.0, commander@^2.8.1, commander@^2.9.0:
   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==
@@ -14769,7 +14769,7 @@ source-map-resolve@^0.5.0:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
-source-map-support@^0.5.17, source-map-support@^0.5.3, source-map-support@~0.5.10, source-map-support@~0.5.12, source-map-support@~0.5.19:
+source-map-support@^0.5.17, source-map-support@^0.5.3, source-map-support@~0.5.12, source-map-support@~0.5.19:
   version "0.5.19"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
   integrity sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==
@@ -15611,19 +15611,10 @@ terser-webpack-plugin@^5.1.1:
     source-map "^0.6.1"
     terser "^5.5.1"
 
-terser@^3.16.1:
-  version "3.17.0"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-3.17.0.tgz#f88ffbeda0deb5637f9d24b0da66f4e15ab10cb2"
-  integrity sha512-/FQzzPJmCpjAH9Xvk2paiWrFq+5M6aVOf+2KRbwhByISDX/EujxsK+BAvrhb6H+2rtrLCHK9N01wO014vrIwVQ==
-  dependencies:
-    commander "^2.19.0"
-    source-map "~0.6.1"
-    source-map-support "~0.5.10"
-
-terser@^4.1.2:
-  version "4.8.0"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.0.tgz#63056343d7c70bb29f3af665865a46fe03a0df17"
-  integrity sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==
+terser@^4.1.2, 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 "^2.20.0"
     source-map "~0.6.1"
@@ -16140,9 +16131,9 @@ undeclared-identifiers@^1.1.2:
     xtend "^4.0.1"
 
 underscore@1.9.1, underscore@>1.4.4, underscore@^1.12.1:
-  version "1.13.1"
-  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.13.1.tgz#0c1c6bd2df54b6b69f2314066d65b6cde6fcf9d1"
-  integrity sha512-hzSoAVtJF+3ZtiFX0VgfFPHEDRm7Y/QPjGyNo4TVdnDTdft3tr8hEkD25a1jC+TjTuE7tkHGKkhwCgs9dgBB2g==
+  version "1.13.6"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.13.6.tgz#04786a1f589dc6c09f761fc5f45b89e935136441"
+  integrity sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A==
 
 union-value@^1.0.0:
   version "1.0.1"