diff --git a/packages/jest-preset-default/CHANGELOG.md b/packages/jest-preset-default/CHANGELOG.md
index f0abcead550e7..289bcddae6961 100644
--- a/packages/jest-preset-default/CHANGELOG.md
+++ b/packages/jest-preset-default/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Bug Fix
+
+-   Jest Preset: Improve `is-plain-obj` transformation ignore ([#43271](https://github.com/WordPress/gutenberg/pull/43271)).
+
 ## 8.5.1 (2022-08-12)
 
 ### Bug Fix
diff --git a/packages/jest-preset-default/jest-preset.js b/packages/jest-preset-default/jest-preset.js
index 41a018117f105..8ae974b500117 100644
--- a/packages/jest-preset-default/jest-preset.js
+++ b/packages/jest-preset-default/jest-preset.js
@@ -29,5 +29,5 @@ module.exports = {
 	transform: {
 		'\\.[jt]sx?$': require.resolve( 'babel-jest' ),
 	},
-	transformIgnorePatterns: [ 'node_modules/(?!(is-plain-obj))' ],
+	transformIgnorePatterns: [ 'node_modules/(?:(?!is-plain-obj/).)*$' ],
 };
diff --git a/packages/scripts/CHANGELOG.md b/packages/scripts/CHANGELOG.md
index 1fb34560a81a0..d8c4d28991e2f 100644
--- a/packages/scripts/CHANGELOG.md
+++ b/packages/scripts/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Bug Fix
+
+-   Jest Preset: Improve `is-plain-obj` transformation ignore ([#43271](https://github.com/WordPress/gutenberg/pull/43271)).
+
 ## 23.7.1 (2022-08-12)
 
 ### Bug Fix