diff --git a/packages/bootstrap/package.json b/packages/bootstrap/package.json
index 2c43430ea6..8d639cfc08 100644
--- a/packages/bootstrap/package.json
+++ b/packages/bootstrap/package.json
@@ -22,7 +22,7 @@
     "find-up": "^5.0.0",
     "flat": "^5.0.0",
     "hops-debug": "15.0.0-nightly.1",
-    "is-plain-obj": "^3.0.0",
+    "is-plain-obj": "4.0.0",
     "mixinable": "^5.0.1"
   },
   "engines": {
diff --git a/packages/express/package.json b/packages/express/package.json
index 410373a42a..9800db61c1 100644
--- a/packages/express/package.json
+++ b/packages/express/package.json
@@ -32,7 +32,7 @@
     "hops-debug": "15.0.0-nightly.1",
     "hops-mixin": "15.0.0-nightly.1",
     "hops-yargs": "15.0.0-nightly.1",
-    "is-plain-obj": "^3.0.0",
+    "is-plain-obj": "^4.0.0",
     "mime": "^2.4.4",
     "mixinable": "^5.0.1",
     "morgan": "^1.9.1",
diff --git a/packages/mixin/package.json b/packages/mixin/package.json
index 6ba95e4718..32271c46a4 100644
--- a/packages/mixin/package.json
+++ b/packages/mixin/package.json
@@ -20,7 +20,7 @@
     "displayName": "unit"
   },
   "dependencies": {
-    "is-plain-obj": "^3.0.0",
+    "is-plain-obj": "^4.0.0",
     "mixinable": "^5.0.1"
   },
   "homepage": "https://github.com/xing/hops/tree/master/packages/mixin#readme"
diff --git a/packages/react/package.json b/packages/react/package.json
index c260f549b7..74a76475c3 100644
--- a/packages/react/package.json
+++ b/packages/react/package.json
@@ -32,7 +32,7 @@
     "duplitect": "^3.0.0",
     "hops-bootstrap": "15.0.0-nightly.1",
     "hops-mixin": "15.0.0-nightly.1",
-    "is-plain-obj": "^3.0.0",
+    "is-plain-obj": "^4.0.0",
     "mixinable": "^5.0.1",
     "pathifist": "^1.0.0",
     "prop-types": "^15.7.2",
diff --git a/packages/webpack/package.json b/packages/webpack/package.json
index 1a413ddb32..345516544b 100644
--- a/packages/webpack/package.json
+++ b/packages/webpack/package.json
@@ -28,7 +28,7 @@
     "hops-express": "15.0.0-nightly.1",
     "hops-mixin": "15.0.0-nightly.1",
     "hops-yargs": "15.0.0-nightly.1",
-    "is-plain-obj": "^3.0.0",
+    "is-plain-obj": "4.0.0",
     "jsesc": "^3.0.0",
     "loader-utils": "^2.0.0",
     "lodash.get": "^4.4.2",
diff --git a/packages/yargs/package.json b/packages/yargs/package.json
index 735c582593..145412c6d1 100644
--- a/packages/yargs/package.json
+++ b/packages/yargs/package.json
@@ -14,7 +14,7 @@
   "dependencies": {
     "hops-bootstrap": "15.0.0-nightly.1",
     "hops-mixin": "15.0.0-nightly.1",
-    "is-plain-obj": "^3.0.0",
+    "is-plain-obj": "4.0.0",
     "mixinable": "^5.0.1",
     "yargs": "^17.0.0"
   },
diff --git a/yarn.lock b/yarn.lock
index 98af87a161..5ddc33a062 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8002,6 +8002,11 @@ is-obj@^2.0.0:
   resolved "https://registry.yarnpkg.com/is-obj/-/is-obj-2.0.0.tgz#473fb05d973705e3fd9620545018ca8e22ef4982"
   integrity sha512-drqDG3cbczxxEJRoOXcOjtdp1J/lyp1mNn0xaznRs8+muBhgQcrnbspox5X5fOw0HnMnbfDzvnEMEtqDEJEo8w==
 
+is-plain-obj@4.0.0, is-plain-obj@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/is-plain-obj/-/is-plain-obj-4.0.0.tgz#06c0999fd7574edf5a906ba5644ad0feb3a84d22"
+  integrity sha512-NXRbBtUdBioI73y/HmOhogw/U5msYPC9DAtGkJXeFcFWSFZw0mCUsPxk/snTuJHzNKA8kLBK4rH97RMB1BfCXw==
+
 is-plain-obj@^1.0.0, is-plain-obj@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-plain-obj/-/is-plain-obj-1.1.0.tgz#71a50c8429dfca773c92a390a4a03b39fcd51d3e"