diff --git a/packages/plugin-sdk/package.json b/packages/plugin-sdk/package.json
index 5098326..36830b2 100644
--- a/packages/plugin-sdk/package.json
+++ b/packages/plugin-sdk/package.json
@@ -14,6 +14,9 @@
     "test:watch": "vitest",
     "types": "yarn g:types"
   },
+  "dependencies": {
+    "dequal": "^2.0.3"
+  },
   "peerDependencies": {
     "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
   },
diff --git a/packages/plugin-sdk/src/react/hooks.ts b/packages/plugin-sdk/src/react/hooks.ts
index adfd0b1..f3b9700 100644
--- a/packages/plugin-sdk/src/react/hooks.ts
+++ b/packages/plugin-sdk/src/react/hooks.ts
@@ -1,3 +1,4 @@
+import { dequal } from 'dequal/lite';
 import * as React from 'react';
 
 import {
@@ -10,7 +11,6 @@ import {
   PluginStyle,
   UrlParameter,
 } from '../types';
-import { deepEqual } from '../utils/deepEqual';
 
 import { PluginContext } from './Context';
 
@@ -34,7 +34,7 @@ export function useEditorPanelConfig(
 
   React.useEffect(() => {
     if (nextOptions == null) return;
-    if (!deepEqual(nextOptions, optionsRef.current)) {
+    if (!dequal(nextOptions, optionsRef.current)) {
       client.config.configureEditorPanel(nextOptions);
       optionsRef.current = nextOptions;
     }
diff --git a/packages/plugin-sdk/src/utils/__tests__/deepEqual.test.ts b/packages/plugin-sdk/src/utils/__tests__/deepEqual.test.ts
deleted file mode 100644
index a57783c..0000000
--- a/packages/plugin-sdk/src/utils/__tests__/deepEqual.test.ts
+++ /dev/null
@@ -1,91 +0,0 @@
-import { deepEqual } from '../deepEqual';
-
-describe('deepEqual', () => {
-  describe('primitive comparisons', () => {
-    it('returns true for strictly equal primitives', () => {
-      expect(deepEqual(1, 1)).toBe(true);
-      expect(deepEqual('a', 'a')).toBe(true);
-      expect(deepEqual(true, true)).toBe(true);
-      expect(deepEqual(false, false)).toBe(true);
-      expect(deepEqual(null, null)).toBe(true);
-      expect(deepEqual(undefined, undefined)).toBe(true);
-    });
-
-    it('returns true for the same reference', () => {
-      const sym = Symbol('x');
-      expect(deepEqual(sym, sym)).toBe(true);
-
-      const obj = { a: 1 };
-      expect(deepEqual(obj, obj)).toBe(true);
-    });
-
-    it('returns falsy for non-equal primitives', () => {
-      expect(deepEqual(1, 2)).toBeFalsy();
-      expect(deepEqual('a', 'b')).toBeFalsy();
-      expect(deepEqual(true, false)).toBeFalsy();
-      expect(deepEqual(null, undefined)).toBeFalsy();
-      expect(deepEqual(0, '0')).toBeFalsy();
-    });
-  });
-
-  describe('object comparisons', () => {
-    it('returns true for two empty objects', () => {
-      expect(deepEqual({}, {})).toBe(true);
-    });
-
-    it('returns true for shallowly equal objects', () => {
-      expect(deepEqual({ a: 1, b: 'x' }, { a: 1, b: 'x' })).toBe(true);
-    });
-
-    it('returns false for objects with different key counts', () => {
-      expect(deepEqual({ a: 1 }, { a: 1, b: 2 })).toBe(false);
-      expect(deepEqual({ a: 1, b: 2 }, { a: 1 })).toBe(false);
-    });
-
-    it('returns false for objects with the same keys but different values', () => {
-      expect(deepEqual({ a: 1 }, { a: 2 })).toBe(false);
-    });
-
-    it('returns true for deeply nested equal objects', () => {
-      expect(
-        deepEqual(
-          { a: { b: { c: [1, 2, 3] } } },
-          { a: { b: { c: [1, 2, 3] } } },
-        ),
-      ).toBe(true);
-    });
-
-    it('returns false for deeply nested objects that differ', () => {
-      expect(
-        deepEqual(
-          { a: { b: { c: [1, 2, 3] } } },
-          { a: { b: { c: [1, 2, 4] } } },
-        ),
-      ).toBe(false);
-    });
-
-    it('compares arrays as objects', () => {
-      expect(deepEqual([1, 2, 3], [1, 2, 3])).toBe(true);
-      expect(deepEqual([1, 2], [1, 2, 3])).toBe(false);
-      expect(deepEqual([1, 2, 3], [3, 2, 1])).toBe(false);
-    });
-  });
-
-  describe('mixed type comparisons', () => {
-    it('returns falsy when comparing an object against null', () => {
-      expect(deepEqual({}, null)).toBeFalsy();
-      expect(deepEqual(null, {})).toBeFalsy();
-    });
-
-    it('returns falsy when comparing an object against a primitive', () => {
-      expect(deepEqual({}, 1)).toBeFalsy();
-      expect(deepEqual(1, {})).toBeFalsy();
-      expect(deepEqual([], 'a')).toBeFalsy();
-    });
-
-    it('returns falsy when comparing an object against undefined', () => {
-      expect(deepEqual({}, undefined)).toBeFalsy();
-      expect(deepEqual(undefined, {})).toBeFalsy();
-    });
-  });
-});
diff --git a/packages/plugin-sdk/src/utils/deepEqual.ts b/packages/plugin-sdk/src/utils/deepEqual.ts
deleted file mode 100644
index 06210f4..0000000
--- a/packages/plugin-sdk/src/utils/deepEqual.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-function isObject(obj: any) {
-  if (typeof obj === 'object' && obj != null) {
-    return true;
-  } else {
-    return false;
-  }
-}
-
-export function deepEqual(obj1: any, obj2: any) {
-  if (obj1 === obj2) {
-    return true;
-  } else if (isObject(obj1) && isObject(obj2)) {
-    if (Object.keys(obj1).length !== Object.keys(obj2).length) {
-      return false;
-    }
-    for (const prop in obj1) {
-      if (!deepEqual(obj1[prop], obj2[prop])) {
-        return false;
-      }
-    }
-    return true;
-  }
-}
diff --git a/packages/plugin-sdk/tsdown.config.ts b/packages/plugin-sdk/tsdown.config.ts
index fdb5930..ceaf0ae 100644
--- a/packages/plugin-sdk/tsdown.config.ts
+++ b/packages/plugin-sdk/tsdown.config.ts
@@ -11,5 +11,17 @@ export default mergeConfig(
     define: {
       __VERSION__: JSON.stringify(packageJson.version),
     },
+    format: {
+      umd: {
+        deps: {
+          alwaysBundle: id => id.startsWith('dequal'),
+          // TSDown's types are bad. `skipNodeModulesBundle` defaults to `false`
+          // but if you attempt to use the `deps` object,
+          // `skipNodeModulesBundle` is a required property so we have to set it
+          // or TS will throw a type error.
+          skipNodeModulesBundle: false,
+        },
+      },
+    },
   }),
 );
diff --git a/yarn.lock b/yarn.lock
index 6620614..62cd342 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1230,6 +1230,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@sigmacomputing/plugin@workspace:packages/plugin-sdk"
   dependencies:
+    dequal: "npm:^2.0.3"
     tsdown: "npm:^0.21.10"
     vitest: "npm:^4.1.5"
   peerDependencies: