diff --git a/contracts/examples/package.json b/contracts/examples/package.json
index bb20fd2127..ae2769716e 100644
--- a/contracts/examples/package.json
+++ b/contracts/examples/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/contracts-examples",
-    "version": "1.0.1",
+    "version": "1.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -34,7 +34,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/examples/README.md",
     "devDependencies": {
         "@0x/abi-gen": "^1.0.18",
-        "@0x/contracts-test-utils": "^1.0.1",
+        "@0x/contracts-test-utils": "^1.0.0",
         "@0x/dev-utils": "^1.0.20",
         "@0x/sol-compiler": "^1.1.15",
         "@0x/sol-cov": "^2.1.15",
@@ -61,11 +61,11 @@
     },
     "dependencies": {
         "@0x/base-contract": "^3.0.9",
-        "@0x/contracts-interfaces": "^1.0.1",
-        "@0x/contracts-libs": "^1.0.1",
-        "@0x/contracts-multisig": "^1.0.1",
-        "@0x/contracts-tokens": "^1.0.1",
-        "@0x/contracts-utils": "^1.0.1",
+        "@0x/contracts-interfaces": "^1.0.0",
+        "@0x/contracts-libs": "^1.0.0",
+        "@0x/contracts-multisig": "^1.0.0",
+        "@0x/contracts-tokens": "^1.0.0",
+        "@0x/contracts-utils": "^1.0.0",
         "@0x/order-utils": "^3.0.6",
         "@0x/types": "^1.4.0",
         "@0x/typescript-typings": "^3.0.5",
diff --git a/contracts/extensions/package.json b/contracts/extensions/package.json
index e359f1e4dd..0f82317e60 100644
--- a/contracts/extensions/package.json
+++ b/contracts/extensions/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/contracts-extensions",
-    "version": "1.0.1",
+    "version": "1.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -45,7 +45,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/extensions/README.md",
     "devDependencies": {
         "@0x/abi-gen": "^1.0.18",
-        "@0x/contracts-test-utils": "^1.0.1",
+        "@0x/contracts-test-utils": "^1.0.0",
         "@0x/dev-utils": "^1.0.20",
         "@0x/sol-compiler": "^1.1.15",
         "@0x/sol-cov": "^2.1.15",
@@ -72,11 +72,11 @@
     },
     "dependencies": {
         "@0x/base-contract": "^3.0.9",
-        "@0x/contracts-interfaces": "^1.0.1",
-        "@0x/contracts-libs": "^1.0.1",
+        "@0x/contracts-interfaces": "^1.0.0",
+        "@0x/contracts-libs": "^1.0.0",
         "@0x/contracts-protocol": "^2.1.57",
-        "@0x/contracts-tokens": "^1.0.1",
-        "@0x/contracts-utils": "^1.0.1",
+        "@0x/contracts-tokens": "^1.0.0",
+        "@0x/contracts-utils": "^1.0.0",
         "@0x/order-utils": "^3.0.6",
         "@0x/types": "^1.4.0",
         "@0x/typescript-typings": "^3.0.5",
diff --git a/contracts/interfaces/package.json b/contracts/interfaces/package.json
index 85d0ccc262..555b7e2db6 100644
--- a/contracts/interfaces/package.json
+++ b/contracts/interfaces/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/contracts-interfaces",
-    "version": "1.0.1",
+    "version": "1.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,8 +42,8 @@
     },
     "dependencies": {
         "@0x/base-contract": "^3.0.9",
-        "@0x/contracts-libs": "^1.0.1",
-        "@0x/contracts-utils": "^1.0.1",
+        "@0x/contracts-libs": "^1.0.0",
+        "@0x/contracts-utils": "^1.0.0",
         "@0x/types": "^1.4.0",
         "@0x/typescript-typings": "^3.0.5",
         "@0x/utils": "^2.0.7",
diff --git a/contracts/libs/package.json b/contracts/libs/package.json
index 5d061774ff..c95efdb59a 100644
--- a/contracts/libs/package.json
+++ b/contracts/libs/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/contracts-libs",
-    "version": "1.0.1",
+    "version": "1.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -45,7 +45,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/libs/README.md",
     "devDependencies": {
         "@0x/abi-gen": "^1.0.18",
-        "@0x/contracts-test-utils": "^1.0.1",
+        "@0x/contracts-test-utils": "^1.0.0",
         "@0x/dev-utils": "^1.0.20",
         "@0x/sol-compiler": "^1.1.15",
         "@0x/sol-cov": "^2.1.15",
@@ -72,8 +72,8 @@
     },
     "dependencies": {
         "@0x/base-contract": "^3.0.9",
-        "@0x/contracts-multisig": "^1.0.1",
-        "@0x/contracts-utils": "^1.0.1",
+        "@0x/contracts-multisig": "^1.0.0",
+        "@0x/contracts-utils": "^1.0.0",
         "@0x/order-utils": "^3.0.6",
         "@0x/types": "^1.4.0",
         "@0x/typescript-typings": "^3.0.5",
diff --git a/contracts/multisig/package.json b/contracts/multisig/package.json
index 84285aec36..23eb4f3050 100644
--- a/contracts/multisig/package.json
+++ b/contracts/multisig/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/contracts-multisig",
-    "version": "1.0.1",
+    "version": "1.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -45,7 +45,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/multisig/README.md",
     "devDependencies": {
         "@0x/abi-gen": "^1.0.18",
-        "@0x/contracts-test-utils": "^1.0.1",
+        "@0x/contracts-test-utils": "^1.0.0",
         "@0x/dev-utils": "^1.0.20",
         "@0x/sol-compiler": "^1.1.15",
         "@0x/sol-cov": "^2.1.15",
diff --git a/contracts/protocol/CHANGELOG.json b/contracts/protocol/CHANGELOG.json
index 371f18cd4a..92328bdc9e 100644
--- a/contracts/protocol/CHANGELOG.json
+++ b/contracts/protocol/CHANGELOG.json
@@ -11,7 +11,7 @@
     },
     {
         "name": "OrderValidator",
-        "version": "1.0.1",
+        "version": "1.0.0",
         "changes": [
             {
                 "note": "remove `getApproved` check from ERC721 approval query",
diff --git a/contracts/protocol/package.json b/contracts/protocol/package.json
index 1442db51e1..c306e0e7f7 100644
--- a/contracts/protocol/package.json
+++ b/contracts/protocol/package.json
@@ -45,7 +45,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/protocol/README.md",
     "devDependencies": {
         "@0x/abi-gen": "^1.0.18",
-        "@0x/contracts-test-utils": "^1.0.1",
+        "@0x/contracts-test-utils": "^1.0.0",
         "@0x/dev-utils": "^1.0.20",
         "@0x/sol-compiler": "^1.1.15",
         "@0x/sol-cov": "^2.1.15",
@@ -72,12 +72,12 @@
     },
     "dependencies": {
         "@0x/base-contract": "^3.0.9",
-        "@0x/contracts-examples": "^1.0.1",
-        "@0x/contracts-interfaces": "^1.0.1",
-        "@0x/contracts-libs": "^1.0.1",
-        "@0x/contracts-multisig": "^1.0.1",
-        "@0x/contracts-tokens": "^1.0.1",
-        "@0x/contracts-utils": "^1.0.1",
+        "@0x/contracts-examples": "^1.0.0",
+        "@0x/contracts-interfaces": "^1.0.0",
+        "@0x/contracts-libs": "^1.0.0",
+        "@0x/contracts-multisig": "^1.0.0",
+        "@0x/contracts-tokens": "^1.0.0",
+        "@0x/contracts-utils": "^1.0.0",
         "@0x/order-utils": "^3.0.6",
         "@0x/types": "^1.4.0",
         "@0x/typescript-typings": "^3.0.5",
diff --git a/contracts/test-utils/CHANGELOG.json b/contracts/test-utils/CHANGELOG.json
deleted file mode 100644
index 267fdcc615..0000000000
--- a/contracts/test-utils/CHANGELOG.json
+++ /dev/null
@@ -1,11 +0,0 @@
-[
-    {
-        "version": "1.0.1",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ],
-        "timestamp": 1544570656
-    }
-]
diff --git a/contracts/test-utils/CHANGELOG.md b/contracts/test-utils/CHANGELOG.md
deleted file mode 100644
index 22b7fb1096..0000000000
--- a/contracts/test-utils/CHANGELOG.md
+++ /dev/null
@@ -1,10 +0,0 @@
-<!--
-changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
-Edit the package's CHANGELOG.json file only.
--->
-
-CHANGELOG
-
-## v1.0.1 - _December 11, 2018_
-
-    * Dependencies updated
diff --git a/contracts/test-utils/package.json b/contracts/test-utils/package.json
index c15ee92ad0..7b25424679 100644
--- a/contracts/test-utils/package.json
+++ b/contracts/test-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "1.0.1",
+    "version": "1.0.0",
     "engines": {
         "node": ">=6.12"
     },
diff --git a/contracts/tokens/package.json b/contracts/tokens/package.json
index 6c932a891b..cf2d627e55 100644
--- a/contracts/tokens/package.json
+++ b/contracts/tokens/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/contracts-tokens",
-    "version": "1.0.1",
+    "version": "1.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -45,7 +45,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/tokens/README.md",
     "devDependencies": {
         "@0x/abi-gen": "^1.0.18",
-        "@0x/contracts-test-utils": "^1.0.1",
+        "@0x/contracts-test-utils": "^1.0.0",
         "@0x/dev-utils": "^1.0.20",
         "@0x/sol-compiler": "^1.1.15",
         "@0x/sol-cov": "^2.1.15",
@@ -72,10 +72,10 @@
     },
     "dependencies": {
         "@0x/base-contract": "^3.0.9",
-        "@0x/contracts-interfaces": "^1.0.1",
-        "@0x/contracts-libs": "^1.0.1",
-        "@0x/contracts-multisig": "^1.0.1",
-        "@0x/contracts-utils": "^1.0.1",
+        "@0x/contracts-interfaces": "^1.0.0",
+        "@0x/contracts-libs": "^1.0.0",
+        "@0x/contracts-multisig": "^1.0.0",
+        "@0x/contracts-utils": "^1.0.0",
         "@0x/order-utils": "^3.0.6",
         "@0x/types": "^1.4.0",
         "@0x/typescript-typings": "^3.0.5",
diff --git a/contracts/utils/package.json b/contracts/utils/package.json
index e8a2a7710f..f653d7d725 100644
--- a/contracts/utils/package.json
+++ b/contracts/utils/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/contracts-utils",
-    "version": "1.0.1",
+    "version": "1.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -45,7 +45,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/utils/README.md",
     "devDependencies": {
         "@0x/abi-gen": "^1.0.18",
-        "@0x/contracts-test-utils": "^1.0.1",
+        "@0x/contracts-test-utils": "^1.0.0",
         "@0x/dev-utils": "^1.0.20",
         "@0x/sol-compiler": "^1.1.15",
         "@0x/sol-cov": "^2.1.15",
@@ -73,7 +73,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^3.0.9",
-        "@0x/contracts-multisig": "^1.0.1",
+        "@0x/contracts-multisig": "^1.0.0",
         "@0x/order-utils": "^3.0.6",
         "@0x/types": "^1.4.0",
         "@0x/typescript-typings": "^3.0.5",