diff --git a/plugins/kubernetes/src/setupTests.ts b/plugins/kubernetes/src/setupTests.ts
index 28a35d2b06..a373310a1a 100644
--- a/plugins/kubernetes/src/setupTests.ts
+++ b/plugins/kubernetes/src/setupTests.ts
@@ -14,3 +14,14 @@
  * limitations under the License.
  */
 import '@testing-library/jest-dom';
+// eslint-disable-next-line no-restricted-imports
+import { TextDecoder, TextEncoder } from 'util';
+
+// These are missing from jest-node, so not available on global.
+Object.defineProperty(global, 'TextEncoder', {
+  value: TextEncoder,
+});
+
+Object.defineProperty(global, 'TextDecoder', {
+  value: TextDecoder,
+});