diff --git a/package.json b/package.json
index 9668d569..b306a9d3 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "rollup": "2.79.1",
     "rollup-plugin-typescript": "1.0.1",
     "standardx": "6.0.0",
-    "testem": "3.10.1",
+    "testem": "3.11.0",
     "typescript": "3.9.10",
     "webpack": "4.47.0",
     "webpack-cli": "4.10.0"
diff --git a/yarn.lock b/yarn.lock
index 3a818b42..2badecb9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7365,10 +7365,10 @@ mkdirp@^0.5.3:
   dependencies:
     minimist "^1.2.5"
 
-mkdirp@^1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
-  integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
+mkdirp@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-3.0.1.tgz#e44e4c5607fb279c168241713cc6e0fea9adcb50"
+  integrity sha512-+NsyUUAZDmo6YVHzL/stxSu3t9YS1iljliy3BSDrXJ/dkn1KYdmtZODGGjLcc9XLgVVpH4KshHB8XmZgMhaBXg==
 
 move-concurrently@^1.0.1:
   version "1.0.1"
@@ -10751,10 +10751,10 @@ terser@^4.1.2, terser@^4.3.9:
     source-map "~0.6.1"
     source-map-support "~0.5.12"
 
-testem@3.10.1:
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/testem/-/testem-3.10.1.tgz#bab8a83bec11e975f7d1e47e924eed6135957e5b"
-  integrity sha512-42c4e7qlAelwMd8O3ogtVGRbgbr6fJnX6H51ACOIG1V1IjsKPlcQtxPyOwaL4iikH22Dfh+EyIuJnMG4yxieBQ==
+testem@3.11.0:
+  version "3.11.0"
+  resolved "https://registry.yarnpkg.com/testem/-/testem-3.11.0.tgz#24f46528a9f7135eca88466b35ca8e09ad497399"
+  integrity sha512-q0U126/nnRH54ZDrr6j1Ai5zK6vOm2rdY/5VJrbqcEPQgOWoLB6zrymWUs7BqN2/yRsdorocl9E9ZEwm7LLIZQ==
   dependencies:
     "@xmldom/xmldom" "^0.8.0"
     backbone "^1.1.2"
@@ -10774,7 +10774,7 @@ testem@3.10.1:
     lodash.clonedeep "^4.4.1"
     lodash.find "^4.5.1"
     lodash.uniqby "^4.7.0"
-    mkdirp "^1.0.4"
+    mkdirp "^3.0.1"
     mustache "^4.2.0"
     node-notifier "^10.0.0"
     npmlog "^6.0.0"