diff --git a/package.json b/package.json
index 42484fed..ec6e20a9 100644
--- a/package.json
+++ b/package.json
@@ -165,7 +165,6 @@
     "auto-globals": "^4.0.0",
     "babel-loader": "^10.0.0",
     "babel-plugin-macros": "^3.0.0",
-    "c8": "^11.0.0",
     "cheerio": "^1.0.0-rc.5",
     "clean-css-loader": "^4.2.1",
     "codegen.macro": "^4.0.0",
@@ -208,6 +207,7 @@
     "serve-once": "^3.0.1",
     "smalltalk": "^5.0.0",
     "style-loader": "^4.0.0",
+    "superc8": "^12.6.0",
     "supermenu": "^5.0.0",
     "supertape": "^13.0.0",
     "tar-stream": "^3.0.0",