diff --git a/package.json b/package.json
index 5037d25b..00281aef 100644
--- a/package.json
+++ b/package.json
@@ -83,7 +83,7 @@
     "babel-plugin-transform-remove-console": "6.9.4",
     "babel-plugin-unassert": "3.1.0",
     "babel-preset-power-assert": "3.0.0",
-    "c8": "7.7.3",
+    "c8": "7.8.0",
     "esdoc": "1.1.0",
     "esdoc-ecmascript-proposal-plugin": "1.0.0",
     "esdoc-inject-script-plugin": "1.0.0",
diff --git a/yarn.lock b/yarn.lock
index 302f6f92..b003579a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2203,10 +2203,10 @@ builtins@^1.0.3:
   resolved "https://registry.yarnpkg.com/builtins/-/builtins-1.0.3.tgz#cb94faeb61c8696451db36534e1422f94f0aee88"
   integrity sha1-y5T662HIaWRR2zZTThQi+U8K7og=
 
-c8@7.7.3:
-  version "7.7.3"
-  resolved "https://registry.yarnpkg.com/c8/-/c8-7.7.3.tgz#5af8f83b55dace03b353375e7a2ba85e2c13b17f"
-  integrity sha512-ZyA7n3w8i4ETV25tVYMHwJxCSnaOf/LfA8vOcuZOPbonuQfD7tBT/gMWZy7eczRpCDuHcvMXwoqAemg6R0p3+A==
+c8@7.8.0:
+  version "7.8.0"
+  resolved "https://registry.yarnpkg.com/c8/-/c8-7.8.0.tgz#8fcfe848587d9d5796f22e9b0546a387a66d1b3b"
+  integrity sha512-x2Bx+IIEd608B1LmjiNQ/kizRPkCWo5XzuV57J9afPjAHSnYXALwbCSOkQ7cSaNXBNblfqcvdycj+klmL+j6yA==
   dependencies:
     "@bcoe/v8-coverage" "^0.2.3"
     "@istanbuljs/schema" "^0.1.2"