diff --git a/packages/protocol/package.json b/packages/protocol/package.json
index 475ed2a1d..b9c641ce9 100644
--- a/packages/protocol/package.json
+++ b/packages/protocol/package.json
@@ -16,7 +16,7 @@
     "openzeppelin-solidity": "^2.4.0"
   },
   "devDependencies": {
-    "@0x/sol-coverage": "^3.0.0",
+    "@0x/sol-coverage": "^4.0.4",
     "@0x/sol-profiler": "^3.1.2",
     "@0x/sol-trace": "^2.0.8",
     "@0x/subproviders": "^5.0.1",