diff --git a/package.json b/package.json
index e5e5a36..0cf799e 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "chai-as-promised": "7.1.1",
     "esm": "3.2.25",
     "fast-check": "2.17.0",
-    "mocha": "9.0.3",
+    "mocha": "9.1.0",
     "sinon": "11.1.2",
     "sinon-chai": "3.7.0",
     "source-map-support": "0.5.19",
diff --git a/yarn.lock b/yarn.lock
index 0610118..dc1713b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -547,10 +547,10 @@ minimatch@3.0.4, minimatch@^3.0.4:
   dependencies:
     brace-expansion "^1.1.7"
 
-mocha@9.0.3:
-  version "9.0.3"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-9.0.3.tgz#128cd6bbd3ee0adcdaef715f357f76ec1e6227c7"
-  integrity sha512-hnYFrSefHxYS2XFGtN01x8un0EwNu2bzKvhpRFhgoybIvMaOkkL60IVPmkb5h6XDmUl4IMSB+rT5cIO4/4bJgg==
+mocha@9.1.0:
+  version "9.1.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-9.1.0.tgz#0a7aa6fc4f59d1015d4e11747d9104b752553c67"
+  integrity sha512-Kjg/XxYOFFUi0h/FwMOeb6RoroiZ+P1yOfya6NK7h3dNhahrJx1r2XIT3ge4ZQvJM86mdjNA+W5phqRQh7DwCg==
   dependencies:
     "@ungap/promise-all-settled" "1.1.2"
     ansi-colors "4.1.1"