diff --git a/package-lock.json b/package-lock.json
index 651427b..82ce196 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,6 +9,7 @@
       "version": "1.2.0",
       "license": "MIT",
       "dependencies": {
+        "prop-types": "^15.7.2",
         "tiny-invariant": "^1.1.0"
       },
       "devDependencies": {
@@ -44,7 +45,6 @@
         "jest": "^29.7.0",
         "jest-environment-jsdom": "^29.7.0",
         "prettier": "^3.2.5",
-        "prop-types": "^15.8.1",
         "react": "^17",
         "react-dom": "^17",
         "regenerator-runtime": "^0.14.1",
@@ -60,7 +60,6 @@
         "yalc": "^1.0.0-pre.53"
       },
       "peerDependencies": {
-        "prop-types": "^15.7.2",
         "react": "16.x || 17.x || 18.x || 19.x",
         "rollbar": "^2.26.4 || ^3.0.0-alpha.3 || ^4.0.0"
       }
@@ -10575,8 +10574,7 @@
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
-      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
-      "dev": true
+      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="
     },
     "node_modules/js-yaml": {
       "version": "3.15.2",
@@ -10810,7 +10808,6 @@
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
       "integrity": "sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==",
-      "dev": true,
       "dependencies": {
         "js-tokens": "^3.0.0 || ^4.0.0"
       },
@@ -11167,7 +11164,6 @@
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
       "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
-      "dev": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -11739,7 +11735,6 @@
       "version": "15.8.1",
       "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.8.1.tgz",
       "integrity": "sha512-oj87CgZICdulUohogVAR7AjlC0327U4el4L6eAvOqCeudMDVU0NThNaV+b9Df4dXgSP1gXMTnPdhfe/2qDH5cg==",
-      "dev": true,
       "dependencies": {
         "loose-envify": "^1.4.0",
         "object-assign": "^4.1.1",
@@ -11749,8 +11744,7 @@
     "node_modules/prop-types/node_modules/react-is": {
       "version": "16.13.1",
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",
-      "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==",
-      "dev": true
+      "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ=="
     },
     "node_modules/psl": {
       "version": "1.9.0",
diff --git a/package.json b/package.json
index bf76afa..0298fee 100644
--- a/package.json
+++ b/package.json
@@ -54,6 +54,7 @@
   },
   "homepage": "https://github.com/rollbar/rollbar-react#readme",
   "dependencies": {
+    "prop-types": "^15.7.2",
     "tiny-invariant": "^1.1.0"
   },
   "devDependencies": {
@@ -89,7 +90,6 @@
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
     "prettier": "^3.2.5",
-    "prop-types": "^15.8.1",
     "react": "^17",
     "react-dom": "^17",
     "regenerator-runtime": "^0.14.1",
@@ -105,7 +105,6 @@
     "yalc": "^1.0.0-pre.53"
   },
   "peerDependencies": {
-    "prop-types": "^15.7.2",
     "react": "16.x || 17.x || 18.x || 19.x",
     "rollbar": "^2.26.4 || ^3.0.0-alpha.3 || ^4.0.0"
   }
diff --git a/rollup.config.mjs b/rollup.config.mjs
index 9fb50ef..1a4a19f 100644
--- a/rollup.config.mjs
+++ b/rollup.config.mjs
@@ -14,6 +14,11 @@ import { createRequire } from 'node:module';
 // `createRequire` works on every version we support.
 const pkg = createRequire(import.meta.url)('./package.json');
 
+// prop-types is a regular dependency rather than a peer, so peerDepsExternal
+// won't externalize it. Keep it external so consumers dedupe it and bundlers
+// can still strip it from production builds.
+const EXTERNAL = ['prop-types'];
+
 const COMMON_PLUGINS = [
   resolve(),
   peerDepsExternal(),
@@ -52,6 +57,7 @@ export default [
         rollbar: 'Rollbar',
       },
     },
+    external: EXTERNAL,
     plugins: [...COMMON_PLUGINS, commonjs()],
     onwarn,
   },
@@ -89,6 +95,7 @@ export default [
         entryFileNames
       },
     ],
+    external: EXTERNAL,
     plugins: [
       ...COMMON_PLUGINS,
       preserveDirectives({ suppressPreserveModulesWarning: true }),