diff --git a/contracts/coordinator/package.json b/contracts/coordinator/package.json
index 1bf08a2af4..16436de2d5 100644
--- a/contracts/coordinator/package.json
+++ b/contracts/coordinator/package.json
@@ -84,7 +84,7 @@
         "@0x/types": "^2.5.0-beta.1",
         "@0x/typescript-typings": "^4.4.0-beta.1",
         "@0x/utils": "^4.6.0-beta.1",
-        "ethereum-types": "^2.2.0-beta.1",
+        "ethereum-types": "^2.2.0-beta.1"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/dev-utils/package.json b/contracts/dev-utils/package.json
index 89b409a1bf..da8e082cf3 100644
--- a/contracts/dev-utils/package.json
+++ b/contracts/dev-utils/package.json
@@ -54,7 +54,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^5.5.0-beta.1",
-        "ethereum-types": "^2.2.0-beta.1",
+        "ethereum-types": "^2.2.0-beta.1"
     },
     "publishConfig": {
         "access": "public"