diff --git a/CHANGES.md b/CHANGES.md
index e1912f24..65fef4be 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -101,6 +101,8 @@
 - npm: Add `license-badges`, `build-docs`, and `copy` scripts to `prepublishOnly` script
 - npm: Rename `test-prep` to `prep` and other misc. script naming changes
 - npm: Update `package-lock.json`
+- npm: Update from deprecated `rollup-plugin-babel` to `@rollup/plugin-babel`
+    (and make `babelHelpers` explicit)
 - npm: Update devDeps, peerDeps
 
 ## 5.1.0
diff --git a/package-lock.json b/package-lock.json
index feb2646e..e568856f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2173,6 +2173,35 @@
       "integrity": "sha512-7XHoRB61hxsz8lBQrjC1tq/3OEIgpvGWg6DKAdwi7WRzruwkmsdwmOoUXbU4Dtd4RSOMDwed0SkP3y8UlMt1Bg==",
       "dev": true
     },
+    "@rollup/plugin-babel": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-babel/-/plugin-babel-5.0.0.tgz",
+      "integrity": "sha512-YpVnwdUeVj/fDFN75Y3CAzJTMYNcqbH05SJs551wqj+BSwLT9pS3dqJrVDPYl3eH4OrI8ueiEseX5VgUn+0HLA==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-module-imports": "^7.7.4",
+        "@rollup/pluginutils": "^3.0.8"
+      }
+    },
+    "@rollup/pluginutils": {
+      "version": "3.0.10",
+      "resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-3.0.10.tgz",
+      "integrity": "sha512-d44M7t+PjmMrASHbhgpSbVgtL6EFyX7J4mYxwQ/c5eoaE6N2VgCgEcWVzNnwycIloti+/MpwFr8qfw+nRw00sw==",
+      "dev": true,
+      "requires": {
+        "@types/estree": "0.0.39",
+        "estree-walker": "^1.0.1",
+        "picomatch": "^2.2.2"
+      },
+      "dependencies": {
+        "estree-walker": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-1.0.1.tgz",
+          "integrity": "sha512-1fMXF3YP4pZZVozF8j/ZLfvnR8NSIljt56UhbZ5PeeDmmGHpgpdwQt7ITlGvYaQukCvuBRMLEiKiYC+oeIg4cg==",
+          "dev": true
+        }
+      }
+    },
     "@samverschueren/stream-to-observable": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/@samverschueren/stream-to-observable/-/stream-to-observable-0.3.0.tgz",
@@ -2270,6 +2299,12 @@
       "integrity": "sha512-OCutwjDZ4aFS6PB1UZ988C4YgwlBHJd6wCeQqaLdmadZ/7e+w79+hbMUFC1QXDNCmdyoRfAFdm0RypzwR+Qpag==",
       "dev": true
     },
+    "@types/estree": {
+      "version": "0.0.39",
+      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
+      "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw==",
+      "dev": true
+    },
     "@types/events": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/@types/events/-/events-3.0.0.tgz",
@@ -12559,16 +12594,6 @@
         }
       }
     },
-    "rollup-plugin-babel": {
-      "version": "4.4.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-babel/-/rollup-plugin-babel-4.4.0.tgz",
-      "integrity": "sha512-Lek/TYp1+7g7I+uMfJnnSJ7YWoD58ajo6Oarhlex7lvUce+RCKRuGRSgztDO3/MF/PuGKmUL5iTHKf208UNszw==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-module-imports": "^7.0.0",
-        "rollup-pluginutils": "^2.8.1"
-      }
-    },
     "rollup-plugin-re": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/rollup-plugin-re/-/rollup-plugin-re-1.0.7.tgz",
diff --git a/package.json b/package.json
index 4f281a1b..fcaa72f7 100644
--- a/package.json
+++ b/package.json
@@ -150,6 +150,7 @@
     "@cypress/fiddle": "^1.18.2",
     "@fintechstudios/eslint-plugin-chai-as-promised": "^3.0.2",
     "@mysticatea/eslint-plugin": "^13.0.0",
+    "@rollup/plugin-babel": "^5.0.0",
     "babel-plugin-transform-object-rest-spread": "^7.0.0-beta.3",
     "coffeescript": "^2.5.1",
     "copyfiles": "^2.2.0",
@@ -207,7 +208,6 @@
     "remark-lint-ordered-list-marker-value": "^2.0.0",
     "rimraf": "^3.0.2",
     "rollup": "2.8.2",
-    "rollup-plugin-babel": "^4.4.0",
     "rollup-plugin-re": "^1.0.7",
     "rollup-plugin-terser": "^5.3.0",
     "stackblur-canvas": "^2.2.0",
diff --git a/rollup.config.js b/rollup.config.js
index b9fb5319..fd1b1abd 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -6,7 +6,7 @@
 import {join, basename} from 'path';
 import {lstatSync, readdirSync, copyFileSync, mkdirSync} from 'fs';
 
-import babel from 'rollup-plugin-babel';
+import babel from '@rollup/plugin-babel';
 import {terser} from 'rollup-plugin-terser';
 import replace from 'rollup-plugin-re';
 
@@ -50,6 +50,7 @@ function getRollupObject ({minifying, format = 'umd'} = {}) {
     },
     plugins: [
       babel({
+        babelHelpers: 'bundled',
         plugins: [
           'transform-object-rest-spread',
           '@babel/plugin-transform-named-capturing-groups-regex'
@@ -86,6 +87,7 @@ export default [
       },
       plugins: [
         babel({
+          babelHelpers: 'bundled',
           plugins: ['transform-object-rest-spread']
         }),
         min ? terser() : null
@@ -101,7 +103,9 @@ export default [
         name: `svgEditorExtensionLocale_${basename(dir)}_${lang}`,
         file: `dist/extensions/ext-locale/${basename(dir)}/${file}`
       },
-      plugins: [babel()]
+      plugins: [babel({
+        babelHelpers: 'bundled'
+      })]
     };
   }),
   {
@@ -110,7 +114,9 @@ export default [
       format: 'iife',
       file: 'dist/redirect-on-lacking-support.js'
     },
-    plugins: [babel()]
+    plugins: [babel({
+      babelHelpers: 'bundled'
+    })]
   },
   {
     input: 'editor/jspdf/jspdf.plugin.svgToPdf.js',
@@ -118,7 +124,9 @@ export default [
       format: 'iife',
       file: 'dist/jspdf.plugin.svgToPdf.js'
     },
-    plugins: [babel()]
+    plugins: [babel({
+      babelHelpers: 'bundled'
+    })]
   },
   {
     input: 'editor/extensions/imagelib/index.js',
@@ -128,6 +136,7 @@ export default [
     },
     plugins: [
       babel({
+        babelHelpers: 'bundled',
         plugins: ['transform-object-rest-spread']
       })
     ]
@@ -140,6 +149,7 @@ export default [
     },
     plugins: [
       babel({
+        babelHelpers: 'bundled',
         plugins: ['transform-object-rest-spread']
       })
     ]
@@ -150,7 +160,9 @@ export default [
       format: 'iife',
       file: 'dist/dom-polyfill.js'
     },
-    plugins: [babel()]
+    plugins: [babel({
+      babelHelpers: 'bundled'
+    })]
   },
   {
     input: 'editor/canvg/canvg.js',
@@ -159,7 +171,9 @@ export default [
       name: 'canvg',
       file: 'dist/canvg.js'
     },
-    plugins: [babel()]
+    plugins: [babel({
+      babelHelpers: 'bundled'
+    })]
   },
   ...localeFiles.map((localeFile) => {
     // lang.*.js
@@ -177,7 +191,9 @@ export default [
       },
       plugins: [
         // Probably don't need here, but...
-        babel()
+        babel({
+          babelHelpers: 'bundled'
+        })
       ]
     };
   }),
@@ -229,6 +245,7 @@ export default [
           ]
         }),
         babel({
+          babelHelpers: 'bundled',
           plugins: ['transform-object-rest-spread']
         })
       ]