diff --git a/packages/plugins/eslint-plugin-react-dom/package.json b/packages/plugins/eslint-plugin-react-dom/package.json
index 35563e5ea..a6e1f6ca1 100644
--- a/packages/plugins/eslint-plugin-react-dom/package.json
+++ b/packages/plugins/eslint-plugin-react-dom/package.json
@@ -58,6 +58,7 @@
     "@typescript-eslint/scope-manager": "^8.15.0",
     "@typescript-eslint/types": "^8.15.0",
     "@typescript-eslint/utils": "^8.15.0",
+    "compare-versions": "^6.1.1",
     "ts-pattern": "^5.5.0"
   },
   "devDependencies": {
diff --git a/packages/plugins/eslint-plugin-react-dom/src/rules/no-unknown-property.spec.ts b/packages/plugins/eslint-plugin-react-dom/src/rules/no-unknown-property.spec.ts
index e48584e49..6ef9c4be1 100644
--- a/packages/plugins/eslint-plugin-react-dom/src/rules/no-unknown-property.spec.ts
+++ b/packages/plugins/eslint-plugin-react-dom/src/rules/no-unknown-property.spec.ts
@@ -655,6 +655,25 @@ ruleTester.run(RULE_NAME, rule, {
           <div popover id="my-popover">Greetings, one and all!</div>
         </div>
       `,
+      settings: {
+        "react-x": {
+          version: "18.3.1",
+        },
+      },
+    },
+    {
+      code: `
+        <div>
+          <button popoverTarget="my-popover" popoverTargetAction="toggle">Open Popover</button>
+
+          <div popover id="my-popover">Greetings, one and all!</div>
+        </div>
+      `,
+      settings: {
+        "react-x": {
+          version: "19.0.0-rc.0",
+        },
+      },
     },
   ],
 });
diff --git a/packages/plugins/eslint-plugin-react-dom/src/rules/no-unknown-property.ts b/packages/plugins/eslint-plugin-react-dom/src/rules/no-unknown-property.ts
index 0e347ee63..1ee416125 100644
--- a/packages/plugins/eslint-plugin-react-dom/src/rules/no-unknown-property.ts
+++ b/packages/plugins/eslint-plugin-react-dom/src/rules/no-unknown-property.ts
@@ -4,7 +4,9 @@
 // Ported from https://github.com/jsx-eslint/eslint-plugin-react/blob/master/lib/rules/no-unknown-property.js
 // TODO: Port to TypeScript
 
+import { decodeSettings, normalizeSettings } from "@eslint-react/shared";
 import { createRule } from "../utils";
+import { compare, compareVersions } from "compare-versions";
 
 // ------------------------------------------------------------------------------
 // Constants
@@ -419,10 +421,6 @@ const DOM_PROPERTY_NAMES_ONE_WORD = [
   "security",
   // Video specific
   "controls",
-  // popovers
-  "popover",
-  "popovertarget",
-  "popovertargetaction",
 ];
 
 const DOM_PROPERTY_NAMES_TWO_WORDS = [
@@ -890,16 +888,29 @@ const REACT_ON_PROPS = [
   "onPointerUpCapture",
 ];
 
+const POPOVER_API_PROPS = [
+  "popover",
+  "popoverTarget",
+  "popoverTargetAction",
+  "onToggle",
+  "onBeforeToggle",
+];
+
 function getDOMPropertyNames(context) {
   const ALL_DOM_PROPERTY_NAMES = DOM_PROPERTY_NAMES_TWO_WORDS.concat(DOM_PROPERTY_NAMES_ONE_WORD);
   // this was removed in React v16.1+, see https://github.com/facebook/react/pull/10823
-  if (!testReactVersion(context, ">= 16.1.0")) {
-    return ALL_DOM_PROPERTY_NAMES.concat("allowTransparency");
+  if (testReactVersion(context, "<=", "16.1.0")) {
+    ALL_DOM_PROPERTY_NAMES.push("allowTransparency");
+    return ALL_DOM_PROPERTY_NAMES;
   }
   // these were added in React v16.4.0, see https://reactjs.org/blog/2018/05/23/react-v-16-4.html and https://github.com/facebook/react/pull/12507
-  if (testReactVersion(context, ">= 16.4.0")) {
-    return ALL_DOM_PROPERTY_NAMES.concat(REACT_ON_PROPS);
+  if (testReactVersion(context, ">=", "16.4.0")) {
+    ALL_DOM_PROPERTY_NAMES.push(...REACT_ON_PROPS);
   }
+  // these were added in React v19.0.0-rc.0, see https://github.com/facebook/react/pull/27981
+  testReactVersion(context, ">=", "19.0.0-rc.0")
+    ? ALL_DOM_PROPERTY_NAMES.push(...POPOVER_API_PROPS)
+    : ALL_DOM_PROPERTY_NAMES.push(...POPOVER_API_PROPS.map((prop) => prop.toLowerCase()));
   return ALL_DOM_PROPERTY_NAMES;
 }
 
@@ -1185,6 +1196,8 @@ function report(context, message, messageId, data) {
   });
 }
 
-function testReactVersion(context, version) {
-  return true;
+function testReactVersion(context, comparator, version) {
+  const { version: localVersion } = normalizeSettings(decodeSettings(context.settings));
+  console.log(localVersion, version, comparator);
+  return compare(localVersion, version, comparator);
 }
diff --git a/packages/plugins/eslint-plugin-react-x/package.json b/packages/plugins/eslint-plugin-react-x/package.json
index 3593608c7..7a17ecc68 100644
--- a/packages/plugins/eslint-plugin-react-x/package.json
+++ b/packages/plugins/eslint-plugin-react-x/package.json
@@ -60,7 +60,7 @@
     "@typescript-eslint/types": "^8.15.0",
     "@typescript-eslint/utils": "^8.15.0",
     "compare-versions": "^6.1.1",
-    "is-immutable-type": "5.0.0",
+    "is-immutable-type": "^5.0.0",
     "ts-pattern": "^5.5.0"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c487f4311..47bbbd449 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -8,12 +8,12 @@ overrides:
   array-flatten: npm:@nolyfill/array-flatten@^1.0.42
   is-core-module: npm:@nolyfill/is-core-module@^1.0.39
   isarray: npm:@nolyfill/isarray@^1.0.29
+  nextra: 3.1.0
+  nextra-theme-docs: 3.1.0
   safe-buffer: npm:@nolyfill/safe-buffer@^1.0.41
   safer-buffer: npm:@nolyfill/safer-buffer@^1.0.41
   side-channel: npm:@nolyfill/side-channel@^1.0.29
   typedarray: npm:@nolyfill/typedarray@^1.0.29
-  nextra: 3.1.0
-  nextra-theme-docs: 3.1.0
   typescript: ^5.6.3
 
 importers:
@@ -639,6 +639,9 @@ importers:
       '@typescript-eslint/utils':
         specifier: ^8.15.0
         version: 8.15.0(eslint@9.15.0(jiti@2.3.3))(typescript@5.6.3)
+      compare-versions:
+        specifier: ^6.1.1
+        version: 6.1.1
       eslint:
         specifier: ^8.57.0 || ^9.0.0
         version: 9.15.0(jiti@2.3.3)
@@ -875,7 +878,7 @@ importers:
         specifier: ^8.57.0 || ^9.0.0
         version: 9.15.0(jiti@2.3.3)
       is-immutable-type:
-        specifier: 5.0.0
+        specifier: ^5.0.0
         version: 5.0.0(eslint@9.15.0(jiti@2.3.3))(typescript@5.6.3)
       ts-pattern:
         specifier: ^5.5.0