diff --git a/package.json b/package.json
index 2e8910e..b94f38c 100644
--- a/package.json
+++ b/package.json
@@ -96,7 +96,7 @@
     "babel-plugin-unassert": "3.2.0",
     "babel-preset-power-assert": "3.0.0",
     "benchmark": "2.1.4",
-    "c8": "10.0.0",
+    "c8": "10.1.1",
     "esdoc": "1.1.0",
     "esdoc-inject-script-plugin": "1.0.0",
     "esdoc-inject-style-plugin": "1.0.0",
diff --git a/yarn.lock b/yarn.lock
index 5a50a1c..d784b37 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3537,10 +3537,10 @@ bundle-name@^4.1.0:
   dependencies:
     run-applescript "^7.0.0"
 
-c8@10.0.0:
-  version "10.0.0"
-  resolved "https://registry.yarnpkg.com/c8/-/c8-10.0.0.tgz#a28fe2268926e5d7486bc803755f4d5b4db18371"
-  integrity sha512-rdQecjxw16P8kwgMBjruaQyfF+R2o/mucCCK4VPktwq2HFMWLOHGyUasb46+WlUOVJX94d6dZolcJxzjCzWmXg==
+c8@10.1.1:
+  version "10.1.1"
+  resolved "https://registry.yarnpkg.com/c8/-/c8-10.1.1.tgz#797e324386257506bff782f9eb2af868d103993d"
+  integrity sha512-+aAvpNMwnzncW27XsEf2eMrGTF8HXIGZ24UQ1dW679+8SQ/UvDXxHNoKwMohcI9ZVj0xl/bI4/meqxvIWOBYaw==
   dependencies:
     "@bcoe/v8-coverage" "^0.2.3"
     "@istanbuljs/schema" "^0.1.3"