diff --git a/dist/main/index.js b/dist/main/index.js
index 00b9347..7808bf3 100644
--- a/dist/main/index.js
+++ b/dist/main/index.js
@@ -70176,7 +70176,7 @@ function checkForUpdates(graalVMVersion, javaVersion) {
         if (graalVMVersion.length > 0 &&
             (javaVersion === '17' || javaVersion === '19')) {
             const recommendedJDK = javaVersion === '17' ? '17' : '20';
-            core.notice(`A new GraalVM release is available! Please consider upgrading to GraalVM for JDK ${recommendedJDK}. Release notes: https://www.graalvm.org/release-notes/JDK_${recommendedJDK}/`);
+            core.notice(`A new GraalVM release is available! Please consider upgrading to GraalVM for JDK ${recommendedJDK}. Instructions: https://github.com/graalvm/setup-graalvm#migrating-from-graalvm-223-or-earlier-to-the-new-graalvm-for-jdk-17-and-later`);
             return;
         }
         if (graalVMVersion.startsWith('22.3.') && javaVersion === '11') {
@@ -70871,7 +70871,8 @@ function findLatestGraalVMJDKCEJavaVersion(majorJavaVersion) {
         const versionNumberStartIndex = `refs/tags/${GRAALVM_JDK_TAG_PREFIX}`.length;
         for (const matchingRef of matchingRefs) {
             const currentVersion = matchingRef.ref.substring(versionNumberStartIndex);
-            if ((0, semver_1.gt)(currentVersion, highestVersion)) {
+            if ((0, semver_1.valid)(currentVersion) &&
+                (0, semver_1.gt)(currentVersion, highestVersion)) {
                 highestVersion = currentVersion;
             }
         }
@@ -71102,6 +71103,7 @@ Object.defineProperty(exports, "__esModule", ({ value: true }));
 const c = __importStar(__nccwpck_require__(9042));
 const core = __importStar(__nccwpck_require__(2186));
 const graalvm = __importStar(__nccwpck_require__(5254));
+const semver_1 = __nccwpck_require__(1383);
 const cache_1 = __nccwpck_require__(7799);
 const path_1 = __nccwpck_require__(1017);
 const cache_2 = __nccwpck_require__(9179);
@@ -71162,7 +71164,8 @@ function run() {
             else {
                 switch (graalvmVersion) {
                     case c.VERSION_LATEST:
-                        if (javaVersion.startsWith('17') || javaVersion.startsWith('20')) {
+                        if (javaVersion.startsWith('17') ||
+                            ((0, semver_1.valid)(javaVersion) && (0, semver_1.gte)(javaVersion, '20'))) {
                             core.info(`This build is using the new Oracle GraalVM. To select a specific distribution, use the 'distribution' option (see https://github.com/graalvm/setup-graalvm/tree/main#options).`);
                             graalVMHome = yield graalvm.setUpGraalVMJDK(javaVersion);
                         }
diff --git a/src/features/check-for-updates.ts b/src/features/check-for-updates.ts
index 8dec9d4..4f50909 100644
--- a/src/features/check-for-updates.ts
+++ b/src/features/check-for-updates.ts
@@ -14,7 +14,7 @@ export async function checkForUpdates(
   ) {
     const recommendedJDK = javaVersion === '17' ? '17' : '20'
     core.notice(
-      `A new GraalVM release is available! Please consider upgrading to GraalVM for JDK ${recommendedJDK}. Release notes: https://www.graalvm.org/release-notes/JDK_${recommendedJDK}/`
+      `A new GraalVM release is available! Please consider upgrading to GraalVM for JDK ${recommendedJDK}. Instructions: https://github.com/graalvm/setup-graalvm#migrating-from-graalvm-223-or-earlier-to-the-new-graalvm-for-jdk-17-and-later`
     )
     return
   }
diff --git a/src/graalvm.ts b/src/graalvm.ts
index ab904d2..4519028 100644
--- a/src/graalvm.ts
+++ b/src/graalvm.ts
@@ -9,7 +9,7 @@ import {
 import {downloadGraalVMEELegacy} from './gds'
 import {downloadTool} from '@actions/tool-cache'
 import {basename} from 'path'
-import {gt} from 'semver'
+import {gt as semverGt, valid as semverValid} from 'semver'
 
 const GRAALVM_DL_BASE = 'https://download.oracle.com/graalvm'
 const GRAALVM_CE_DL_BASE = `https://github.com/graalvm/${c.GRAALVM_RELEASES_REPO}/releases/download`
@@ -70,7 +70,10 @@ export async function findLatestGraalVMJDKCEJavaVersion(
   const versionNumberStartIndex = `refs/tags/${GRAALVM_JDK_TAG_PREFIX}`.length
   for (const matchingRef of matchingRefs) {
     const currentVersion = matchingRef.ref.substring(versionNumberStartIndex)
-    if (gt(currentVersion, highestVersion)) {
+    if (
+      semverValid(currentVersion) &&
+      semverGt(currentVersion, highestVersion)
+    ) {
       highestVersion = currentVersion
     }
   }
diff --git a/src/main.ts b/src/main.ts
index b0f6936..d94c7f9 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,6 +1,7 @@
 import * as c from './constants'
 import * as core from '@actions/core'
 import * as graalvm from './graalvm'
+import {gte as semverGte, valid as semverValid} from 'semver'
 import {isFeatureAvailable as isCacheAvailable} from '@actions/cache'
 import {join} from 'path'
 import {restore} from './features/cache'
@@ -69,7 +70,10 @@ async function run(): Promise<void> {
     } else {
       switch (graalvmVersion) {
         case c.VERSION_LATEST:
-          if (javaVersion.startsWith('17') || javaVersion.startsWith('20')) {
+          if (
+            javaVersion.startsWith('17') ||
+            (semverValid(javaVersion) && semverGte(javaVersion, '20'))
+          ) {
             core.info(
               `This build is using the new Oracle GraalVM. To select a specific distribution, use the 'distribution' option (see https://github.com/graalvm/setup-graalvm/tree/main#options).`
             )