diff --git a/package.json b/package.json
index 6529702f..3cfb25f1 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "mocha-spec-json-output-reporter": "^1.1.6",
     "source-map-support": "^0.4.18",
     "ts-node": "^8.4.1",
-    "tsickle": "0.33.1",
+    "tsickle": "0.39.1",
     "tslint": "^5.9.1",
     "tsutils": "2.27.2",
     "typescript": "~3.6.4"
diff --git a/yarn.lock b/yarn.lock
index b50f680f..ed68511a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2215,11 +2215,6 @@ source-map@^0.6.0, source-map@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
 
-source-map@^0.7.3:
-  version "0.7.3"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.3.tgz#5302f8169031735226544092e64981f751750383"
-  integrity sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==
-
 split-string@^3.0.1, split-string@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/split-string/-/split-string-3.1.0.tgz#7cb09dda3a86585705c64b39a6466038682e8fe2"
@@ -2404,14 +2399,10 @@ ts-node@^8.4.1:
     source-map-support "^0.5.6"
     yn "^3.0.0"
 
-tsickle@0.33.1:
-  version "0.33.1"
-  resolved "https://registry.yarnpkg.com/tsickle/-/tsickle-0.33.1.tgz#eee4ebabeda3bcd8afc32cee34c822cbe3e839ec"
-  integrity sha512-SpW2G3PvDGs4a5sMXPlWnCWHWRviWjSlI3U0734e3fU3U39VAE0NPr8M3W1cuL/OU/YXheYipGeEwtIJ5k0NHQ==
-  dependencies:
-    minimist "^1.2.0"
-    mkdirp "^0.5.1"
-    source-map "^0.7.3"
+tsickle@0.39.1:
+  version "0.39.1"
+  resolved "https://registry.yarnpkg.com/tsickle/-/tsickle-0.39.1.tgz#7ccf672cde5b430f5dd0b281ee49e170ef390ff9"
+  integrity sha512-CCc9cZhZbKoNizVM+K3Uqgit/go8GacjpqTv1cpwG/n2P0gB9GMoWZbxrUULDE9Wz26Lh86CGf6QyIPUVV1lnQ==
 
 tslib@^1.8.0, tslib@^1.8.1:
   version "1.9.3"