diff --git a/package-lock.json b/package-lock.json
index 7ba73f077b1..6fdab388f9e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -63,7 +63,7 @@
         "redux-throttle": "^0.1.1",
         "scratch-audio": "^1.0.0",
         "scratch-blocks": "^1.1.6",
-        "scratch-l10n": "^3.18.3",
+        "scratch-l10n": "^4.0.0",
         "scratch-paint": "^2.2.151",
         "scratch-render": "^1.0.233",
         "scratch-render-fonts": "^1.0.2",
@@ -24813,6 +24813,21 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/scratch-blocks/node_modules/scratch-l10n": {
+      "version": "3.18.357",
+      "resolved": "https://registry.npmjs.org/scratch-l10n/-/scratch-l10n-3.18.357.tgz",
+      "integrity": "sha512-Rs3YmUa2dzpYqT1O/YT15g99sIwnC7j9TOOmOhUphVKLeiYUvJWiRPKZCugA7/hbIMYZV5VLkmuDgGXhgfSOBw==",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@transifex/api": "4.3.0",
+        "download": "8.0.0",
+        "transifex": "1.6.6"
+      },
+      "bin": {
+        "build-i18n-src": "scripts/build-i18n-src.js",
+        "tx-push-src": "scripts/tx-push-src.js"
+      }
+    },
     "node_modules/scratch-blocks/node_modules/source-map": {
       "version": "0.5.0",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.0.tgz",
@@ -24823,9 +24838,9 @@
       }
     },
     "node_modules/scratch-l10n": {
-      "version": "3.18.341",
-      "resolved": "https://registry.npmjs.org/scratch-l10n/-/scratch-l10n-3.18.341.tgz",
-      "integrity": "sha512-+kYFbB44Poz8P238Vs57Icg0SVlbygnZd1mG5fWrm4vAul3e8eFVJPZ25ZKLJnQD+ZbqKQM1jZVz1h+L706/oA==",
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/scratch-l10n/-/scratch-l10n-4.0.5.tgz",
+      "integrity": "sha512-CRMrceqq9HI3VqVxP2/Ttz3mzAWi+3xg4235pXwUS3r4GNSk7JcFdW/mhx/fbvCjL245+jXQSBKjayATaEROgg==",
       "license": "BSD-3-Clause",
       "dependencies": {
         "@transifex/api": "4.3.0",
diff --git a/package.json b/package.json
index 09d7b07b089..b041aa798d8 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     "redux-throttle": "^0.1.1",
     "scratch-audio": "^1.0.0",
     "scratch-blocks": "^1.1.6",
-    "scratch-l10n": "^3.18.3",
+    "scratch-l10n": "^4.0.0",
     "scratch-paint": "^2.2.151",
     "scratch-render": "^1.0.233",
     "scratch-render-fonts": "^1.0.2",