diff --git a/package.json b/package.json
index d0c8806e..95a997b5 100755
--- a/package.json
+++ b/package.json
@@ -77,11 +77,11 @@
     },
     "dependencies": {
         "cheerio": "^1.0.0-rc.5",
-        "evt": "2.0.0-beta.38",
+        "evt": "2.0.0-beta.39",
         "minimal-polyfills": "^2.2.1",
         "path-browserify": "^1.0.1",
         "react-markdown": "^5.0.3",
         "scripting-tools": "^0.19.13",
-        "tsafe": "^0.8.1"
+        "tsafe": "^0.9.0"
     }
 }
diff --git a/yarn.lock b/yarn.lock
index 09ed3ffa..f4af9d76 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -545,6 +545,15 @@ evt@2.0.0-beta.38:
     run-exclusive "^2.2.14"
     tsafe "^0.4.1"
 
+evt@2.0.0-beta.39:
+  version "2.0.0-beta.39"
+  resolved "https://registry.yarnpkg.com/evt/-/evt-2.0.0-beta.39.tgz#3c859a83b35940f7eecfb5f148f03b7cbf3fee51"
+  integrity sha512-XxJkaHrFWBrzjTbnr5LJYXkGkADsAXReZfq2lFu3Kf1iCEw5/5ibrdXu3bQdWW6xkZ8qwAHT3STU9zYcCl09BA==
+  dependencies:
+    minimal-polyfills "^2.2.1"
+    run-exclusive "^2.2.14"
+    tsafe "^0.4.1"
+
 execa@^5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/execa/-/execa-5.1.1.tgz#f80ad9cbf4298f7bd1d4c9555c21e93741c411dd"
@@ -1469,6 +1478,11 @@ tsafe@^0.8.1:
   resolved "https://registry.yarnpkg.com/tsafe/-/tsafe-0.8.1.tgz#9af7e1540bc04313a82d60c98056a5017c8b086b"
   integrity sha512-EfPjxQHzndQAV/uh0SMGP26Wg3dCuaw8dRv2VPEuGHen5qzg2oqsMvZw2wkQFkiMisZq2fm95m5lheimW2Fpvg==
 
+tsafe@^0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/tsafe/-/tsafe-0.9.0.tgz#8394e5fdf81e690c97e2b8be4180a079a4a19bfb"
+  integrity sha512-wmbu8pI/xmW69b13HoS8WbTcSlRTDjIut9ACblBjVZVTk0vsMRXdoh1k1jMu5EzKNohBavKHhqNOOsccSR7XCA==
+
 tslib@^1.9.0:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"