diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6435923e0f..bd019e28fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,15 @@
 # CHANGELOG
 
-## 0.43.3 Dec 27, 2021
+## 0.42.4 Dec 27, 2021
+
+**Important** As 0.42.3, not published to the stores, fixes dependency issue in 0.42.4.
+
+Changes:
+
+- Ensure `@polkadot/extension-mocks` is correctly listed as devDependency
+
+
+## 0.42.3 Dec 27, 2021
 
 **Important** Not published to the stores, aligns with latest released packages.
 
diff --git a/package.json b/package.json
index 9d5e52ae76..f9590cb32b 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "url": "https://github.com/polkadot-js/extension.git"
   },
   "sideEffects": false,
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "workspaces": [
     "packages/*"
   ],
@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.16.5",
-    "@polkadot/dev": "^0.64.22",
+    "@polkadot/dev": "^0.64.23",
     "@types/jest": "^27.0.3",
     "i18next-scanner": "^3.1.0",
     "sinon-chrome": "^3.0.1"
diff --git a/packages/extension-base/package.json b/packages/extension-base/package.json
index 7fe59f094c..bd92275105 100644
--- a/packages/extension-base/package.json
+++ b/packages/extension-base/package.json
@@ -14,15 +14,14 @@
   },
   "sideEffects": false,
   "type": "module",
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.5",
     "@polkadot/api": "^7.1.1",
-    "@polkadot/extension-chains": "^0.42.4-0",
-    "@polkadot/extension-dapp": "^0.42.4-0",
-    "@polkadot/extension-inject": "^0.42.4-0",
-    "@polkadot/extension-mocks": "^0.42.4-0",
+    "@polkadot/extension-chains": "^0.42.4",
+    "@polkadot/extension-dapp": "^0.42.4",
+    "@polkadot/extension-inject": "^0.42.4",
     "@polkadot/keyring": "^8.2.2",
     "@polkadot/phishing": "^0.6.582",
     "@polkadot/rpc-provider": "^7.1.1",
@@ -33,5 +32,8 @@
     "@polkadot/util-crypto": "^8.2.2",
     "eventemitter3": "^4.0.7",
     "rxjs": "^7.4.0"
+  },
+  "devDependencies": {
+    "@polkadot/extension-mocks": "^0.42.4"
   }
 }
diff --git a/packages/extension-chains/package.json b/packages/extension-chains/package.json
index 66e7278435..08f8e60660 100644
--- a/packages/extension-chains/package.json
+++ b/packages/extension-chains/package.json
@@ -14,11 +14,11 @@
   },
   "sideEffects": false,
   "type": "module",
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.5",
-    "@polkadot/extension-inject": "^0.42.4-0",
+    "@polkadot/extension-inject": "^0.42.4",
     "@polkadot/networks": "^8.2.2",
     "@polkadot/util-crypto": "^8.2.2"
   },
diff --git a/packages/extension-compat-metamask/package.json b/packages/extension-compat-metamask/package.json
index a8330c3f95..81561fa8f3 100644
--- a/packages/extension-compat-metamask/package.json
+++ b/packages/extension-compat-metamask/package.json
@@ -14,12 +14,12 @@
   },
   "sideEffects": false,
   "type": "module",
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.5",
     "@metamask/detect-provider": "^1.2.0",
-    "@polkadot/extension-inject": "^0.42.4-0",
+    "@polkadot/extension-inject": "^0.42.4",
     "@polkadot/types": "^7.1.1",
     "@polkadot/util": "^8.2.2",
     "web3": "^1.6.1"
diff --git a/packages/extension-dapp/package.json b/packages/extension-dapp/package.json
index 08066c906c..131ce56ea3 100644
--- a/packages/extension-dapp/package.json
+++ b/packages/extension-dapp/package.json
@@ -14,11 +14,11 @@
   },
   "sideEffects": false,
   "type": "module",
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.5",
-    "@polkadot/extension-inject": "^0.42.4-0",
+    "@polkadot/extension-inject": "^0.42.4",
     "@polkadot/util": "^8.2.2",
     "@polkadot/util-crypto": "^8.2.2"
   },
diff --git a/packages/extension-inject/package.json b/packages/extension-inject/package.json
index bdd219df5a..695421d35a 100644
--- a/packages/extension-inject/package.json
+++ b/packages/extension-inject/package.json
@@ -14,7 +14,7 @@
   },
   "sideEffects": true,
   "type": "module",
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.5",
diff --git a/packages/extension-mocks/package.json b/packages/extension-mocks/package.json
index 74e1a1ed9d..76546e9bbf 100644
--- a/packages/extension-mocks/package.json
+++ b/packages/extension-mocks/package.json
@@ -14,7 +14,7 @@
   },
   "sideEffects": false,
   "type": "module",
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.5",
diff --git a/packages/extension-ui/package.json b/packages/extension-ui/package.json
index 822a5fffcd..4bdde8b5c9 100644
--- a/packages/extension-ui/package.json
+++ b/packages/extension-ui/package.json
@@ -14,7 +14,7 @@
   },
   "sideEffects": true,
   "type": "module",
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "dependencies": {
     "@babel/runtime": "^7.16.5",
     "@fortawesome/fontawesome-svg-core": "^1.2.36",
@@ -22,10 +22,10 @@
     "@fortawesome/free-regular-svg-icons": "^5.15.4",
     "@fortawesome/free-solid-svg-icons": "^5.15.4",
     "@fortawesome/react-fontawesome": "^0.1.16",
-    "@polkadot/extension-base": "^0.42.4-0",
-    "@polkadot/extension-chains": "^0.42.4-0",
-    "@polkadot/extension-dapp": "^0.42.4-0",
-    "@polkadot/extension-inject": "^0.42.4-0",
+    "@polkadot/extension-base": "^0.42.4",
+    "@polkadot/extension-chains": "^0.42.4",
+    "@polkadot/extension-dapp": "^0.42.4",
+    "@polkadot/extension-inject": "^0.42.4",
     "@polkadot/hw-ledger": "^8.2.2",
     "@polkadot/keyring": "^8.2.2",
     "@polkadot/networks": "^8.2.2",
@@ -49,6 +49,7 @@
     "styled-components": "^5.3.3"
   },
   "devDependencies": {
+    "@polkadot/extension-mocks": "^0.42.4",
     "@types/bn.js": "^4.11.6",
     "@types/enzyme": "^3.10.10",
     "@types/enzyme-adapter-react-16": "^1.0.6",
diff --git a/packages/extension/package.json b/packages/extension/package.json
index 479f673ebf..af3e1615b4 100644
--- a/packages/extension/package.json
+++ b/packages/extension/package.json
@@ -14,15 +14,15 @@
   },
   "sideEffects": false,
   "type": "module",
-  "version": "0.42.4-0",
+  "version": "0.42.4",
   "dependencies": {
     "@babel/runtime": "^7.16.5",
-    "@polkadot/extension-base": "^0.42.4-0",
-    "@polkadot/extension-inject": "^0.42.4-0",
-    "@polkadot/extension-ui": "^0.42.4-0"
+    "@polkadot/extension-base": "^0.42.4",
+    "@polkadot/extension-inject": "^0.42.4",
+    "@polkadot/extension-ui": "^0.42.4"
   },
   "devDependencies": {
-    "@polkadot/dev": "^0.64.22",
+    "@polkadot/dev": "^0.64.23",
     "babel-loader": "^8.2.3",
     "browser-resolve": "^2.0.0",
     "buffer": "^6.0.3",
diff --git a/yarn.lock b/yarn.lock
index 143baebac5..2d708ebf08 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2384,9 +2384,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/dev@npm:^0.64.22":
-  version: 0.64.22
-  resolution: "@polkadot/dev@npm:0.64.22"
+"@polkadot/dev@npm:^0.64.23":
+  version: 0.64.23
+  resolution: "@polkadot/dev@npm:0.64.23"
   dependencies:
     "@babel/cli": ^7.16.0
     "@babel/core": ^7.16.5
@@ -2471,20 +2471,20 @@ __metadata:
     polkadot-exec-rollup: scripts/polkadot-exec-rollup.mjs
     polkadot-exec-tsc: scripts/polkadot-exec-tsc.mjs
     polkadot-exec-webpack: scripts/polkadot-exec-webpack.mjs
-  checksum: 4f2e79f7de3777b17ab877819d32a9b88ec136e18cd0fc8002885b3bf0afae0e02acf9e05b16ecc86c20c12c8a5fea89416c2f48555571c2223929ce5b5fa1a5
+  checksum: d866fc56eb4d6b3cd8e89908d2d579dcb00c6ab070b3f6d98ff4c2099198366d63d07cc3688b2e0807afa07052403286029e9b9ff86f37b44c0d2db04f9406a8
   languageName: node
   linkType: hard
 
-"@polkadot/extension-base@^0.42.4-0, @polkadot/extension-base@workspace:packages/extension-base":
+"@polkadot/extension-base@^0.42.4, @polkadot/extension-base@workspace:packages/extension-base":
   version: 0.0.0-use.local
   resolution: "@polkadot/extension-base@workspace:packages/extension-base"
   dependencies:
     "@babel/runtime": ^7.16.5
     "@polkadot/api": ^7.1.1
-    "@polkadot/extension-chains": ^0.42.4-0
-    "@polkadot/extension-dapp": ^0.42.4-0
-    "@polkadot/extension-inject": ^0.42.4-0
-    "@polkadot/extension-mocks": ^0.42.4-0
+    "@polkadot/extension-chains": ^0.42.4
+    "@polkadot/extension-dapp": ^0.42.4
+    "@polkadot/extension-inject": ^0.42.4
+    "@polkadot/extension-mocks": ^0.42.4
     "@polkadot/keyring": ^8.2.2
     "@polkadot/phishing": ^0.6.582
     "@polkadot/rpc-provider": ^7.1.1
@@ -2498,12 +2498,12 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/extension-chains@^0.42.4-0, @polkadot/extension-chains@workspace:packages/extension-chains":
+"@polkadot/extension-chains@^0.42.4, @polkadot/extension-chains@workspace:packages/extension-chains":
   version: 0.0.0-use.local
   resolution: "@polkadot/extension-chains@workspace:packages/extension-chains"
   dependencies:
     "@babel/runtime": ^7.16.5
-    "@polkadot/extension-inject": ^0.42.4-0
+    "@polkadot/extension-inject": ^0.42.4
     "@polkadot/networks": ^8.2.2
     "@polkadot/util-crypto": ^8.2.2
   peerDependencies:
@@ -2518,7 +2518,7 @@ __metadata:
   dependencies:
     "@babel/runtime": ^7.16.5
     "@metamask/detect-provider": ^1.2.0
-    "@polkadot/extension-inject": ^0.42.4-0
+    "@polkadot/extension-inject": ^0.42.4
     "@polkadot/types": ^7.1.1
     "@polkadot/util": ^8.2.2
     web3: ^1.6.1
@@ -2527,12 +2527,12 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/extension-dapp@^0.42.4-0, @polkadot/extension-dapp@workspace:packages/extension-dapp":
+"@polkadot/extension-dapp@^0.42.4, @polkadot/extension-dapp@workspace:packages/extension-dapp":
   version: 0.0.0-use.local
   resolution: "@polkadot/extension-dapp@workspace:packages/extension-dapp"
   dependencies:
     "@babel/runtime": ^7.16.5
-    "@polkadot/extension-inject": ^0.42.4-0
+    "@polkadot/extension-inject": ^0.42.4
     "@polkadot/util": ^8.2.2
     "@polkadot/util-crypto": ^8.2.2
   peerDependencies:
@@ -2542,7 +2542,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/extension-inject@^0.42.4-0, @polkadot/extension-inject@workspace:packages/extension-inject":
+"@polkadot/extension-inject@^0.42.4, @polkadot/extension-inject@workspace:packages/extension-inject":
   version: 0.0.0-use.local
   resolution: "@polkadot/extension-inject@workspace:packages/extension-inject"
   dependencies:
@@ -2557,7 +2557,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/extension-mocks@^0.42.4-0, @polkadot/extension-mocks@workspace:packages/extension-mocks":
+"@polkadot/extension-mocks@^0.42.4, @polkadot/extension-mocks@workspace:packages/extension-mocks":
   version: 0.0.0-use.local
   resolution: "@polkadot/extension-mocks@workspace:packages/extension-mocks"
   dependencies:
@@ -2566,7 +2566,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/extension-ui@^0.42.4-0, @polkadot/extension-ui@workspace:packages/extension-ui":
+"@polkadot/extension-ui@^0.42.4, @polkadot/extension-ui@workspace:packages/extension-ui":
   version: 0.0.0-use.local
   resolution: "@polkadot/extension-ui@workspace:packages/extension-ui"
   dependencies:
@@ -2576,10 +2576,11 @@ __metadata:
     "@fortawesome/free-regular-svg-icons": ^5.15.4
     "@fortawesome/free-solid-svg-icons": ^5.15.4
     "@fortawesome/react-fontawesome": ^0.1.16
-    "@polkadot/extension-base": ^0.42.4-0
-    "@polkadot/extension-chains": ^0.42.4-0
-    "@polkadot/extension-dapp": ^0.42.4-0
-    "@polkadot/extension-inject": ^0.42.4-0
+    "@polkadot/extension-base": ^0.42.4
+    "@polkadot/extension-chains": ^0.42.4
+    "@polkadot/extension-dapp": ^0.42.4
+    "@polkadot/extension-inject": ^0.42.4
+    "@polkadot/extension-mocks": ^0.42.4
     "@polkadot/hw-ledger": ^8.2.2
     "@polkadot/keyring": ^8.2.2
     "@polkadot/networks": ^8.2.2
@@ -2623,10 +2624,10 @@ __metadata:
   resolution: "@polkadot/extension@workspace:packages/extension"
   dependencies:
     "@babel/runtime": ^7.16.5
-    "@polkadot/dev": ^0.64.22
-    "@polkadot/extension-base": ^0.42.4-0
-    "@polkadot/extension-inject": ^0.42.4-0
-    "@polkadot/extension-ui": ^0.42.4-0
+    "@polkadot/dev": ^0.64.23
+    "@polkadot/extension-base": ^0.42.4
+    "@polkadot/extension-inject": ^0.42.4
+    "@polkadot/extension-ui": ^0.42.4
     babel-loader: ^8.2.3
     browser-resolve: ^2.0.0
     buffer: ^6.0.3
@@ -14210,7 +14211,7 @@ resolve@^2.0.0-next.3:
   resolution: "root-workspace-0b6124@workspace:."
   dependencies:
     "@babel/core": ^7.16.5
-    "@polkadot/dev": ^0.64.22
+    "@polkadot/dev": ^0.64.23
     "@types/jest": ^27.0.3
     i18next-scanner: ^3.1.0
     sinon-chrome: ^3.0.1