diff --git a/__tests__/distributors/oracle-installer.test.ts b/__tests__/distributors/oracle-installer.test.ts
index ad16eca..356c0c6 100644
--- a/__tests__/distributors/oracle-installer.test.ts
+++ b/__tests__/distributors/oracle-installer.test.ts
@@ -22,6 +22,11 @@ describe('findPackageForDownload', () => {
   });
 
   it.each([
+    [
+      '21',
+      '21',
+      'https://download.oracle.com/java/21/latest/jdk-21_{{OS_TYPE}}-x64_bin.{{ARCHIVE_TYPE}}'
+    ],
     [
       '20',
       '20',
diff --git a/docs/advanced-usage.md b/docs/advanced-usage.md
index e13366d..48aecfd 100644
--- a/docs/advanced-usage.md
+++ b/docs/advanced-usage.md
@@ -121,7 +121,7 @@ steps:
 - uses: actions/setup-java@v3
   with:
     distribution: 'oracle'
-    java-version: '17'
+    java-version: '21'
 - run: java -cp java HelloWorldApp
 ```
 
diff --git a/src/distributions/oracle/installer.ts b/src/distributions/oracle/installer.ts
index 72a92fb..ec0ab21 100644
--- a/src/distributions/oracle/installer.ts
+++ b/src/distributions/oracle/installer.ts
@@ -88,8 +88,8 @@ export class OracleDistribution extends JavaBase {
       `${ORACLE_DL_BASE}/${major}/archive/jdk-${range}_${platform}-${arch}_bin.${extension}`
     );
 
-    if (parseInt(major) < 21) {
-      throw new Error('Oracle JDK is only supported for JDK 21 and later');
+    if (parseInt(major) < 17) {
+      throw new Error('Oracle JDK is only supported for JDK 17 and later');
     }
 
     for (const url of possibleUrls) {