diff --git a/pom.xml b/pom.xml
index 2bc44116..a3775a8a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -57,8 +57,8 @@
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<maven.compiler.target>11</maven.compiler.target>
-		<maven.compiler.source>11</maven.compiler.source>
+		<maven.compiler.target>17</maven.compiler.target>
+		<maven.compiler.source>17</maven.compiler.source>
 
 		<wicket.version>10.0.0-M2</wicket.version>
 		<jackson.version>2.16.1</jackson.version>
diff --git a/wiquery-jquery-ui/src/main/resources/org/wicketstuff/wiquery/ui/datepicker/i18n/datepicker-in.js b/wiquery-jquery-ui/src/main/resources/org/wicketstuff/wiquery/ui/datepicker/i18n/datepicker-in.js
deleted file mode 100644
index 17082e9b..00000000
--- a/wiquery-jquery-ui/src/main/resources/org/wicketstuff/wiquery/ui/datepicker/i18n/datepicker-in.js
+++ /dev/null
@@ -1,41 +0,0 @@
-/* Indonesian initialisation for the jQuery UI date picker plugin. */
-/* Written by Deden Fathurahman (dedenf@gmail.com). */
-/* Fixed by Denny Septian Panggabean (xamidimura@gmail.com) */
-( function( factory ) {
-	"use strict";
-
-	if ( typeof define === "function" && define.amd ) {
-
-		// AMD. Register as an anonymous module.
-		define( [ "../widgets/datepicker" ], factory );
-	} else {
-
-		// Browser globals
-		factory( jQuery.datepicker );
-	}
-} )( function( datepicker ) {
-"use strict";
-
-datepicker.regional.id = {
-	closeText: "Tutup",
-	prevText: "Mundur",
-	nextText: "Maju",
-	currentText: "Hari ini",
-	monthNames: [ "Januari", "Februari", "Maret", "April", "Mei", "Juni",
-	"Juli", "Agustus", "September", "Oktober", "Nopember", "Desember" ],
-	monthNamesShort: [ "Jan", "Feb", "Mar", "Apr", "Mei", "Jun",
-	"Jul", "Agus", "Sep", "Okt", "Nop", "Des" ],
-	dayNames: [ "Minggu", "Senin", "Selasa", "Rabu", "Kamis", "Jumat", "Sabtu" ],
-	dayNamesShort: [ "Min", "Sen", "Sel", "Rab", "Kam", "Jum", "Sab" ],
-	dayNamesMin: [ "Mg", "Sn", "Sl", "Rb", "Km", "Jm", "Sb" ],
-	weekHeader: "Mg",
-	dateFormat: "dd/mm/yy",
-	firstDay: 0,
-	isRTL: false,
-	showMonthAfterYear: false,
-	yearSuffix: "" };
-datepicker.setDefaults( datepicker.regional.id );
-
-return datepicker.regional.id;
-
-} );
diff --git a/wiquery-jquery-ui/src/main/resources/org/wicketstuff/wiquery/ui/datepicker/i18n/datepicker-iw.js b/wiquery-jquery-ui/src/main/resources/org/wicketstuff/wiquery/ui/datepicker/i18n/datepicker-iw.js
deleted file mode 100644
index fbe3c40c..00000000
--- a/wiquery-jquery-ui/src/main/resources/org/wicketstuff/wiquery/ui/datepicker/i18n/datepicker-iw.js
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Hebrew initialisation for the UI Datepicker extension. */
-/* Written by Amir Hardon (ahardon at gmail dot com). */
-( function( factory ) {
-	"use strict";
-
-	if ( typeof define === "function" && define.amd ) {
-
-		// AMD. Register as an anonymous module.
-		define( [ "../widgets/datepicker" ], factory );
-	} else {
-
-		// Browser globals
-		factory( jQuery.datepicker );
-	}
-} )( function( datepicker ) {
-"use strict";
-
-datepicker.regional.he = {
-	closeText: "סגור",
-	prevText: "הקודם",
-	nextText: "הבא",
-	currentText: "היום",
-	monthNames: [ "ינואר", "פברואר", "מרץ", "אפריל", "מאי", "יוני",
-	"יולי", "אוגוסט", "ספטמבר", "אוקטובר", "נובמבר", "דצמבר" ],
-	monthNamesShort: [ "ינו", "פבר", "מרץ", "אפר", "מאי", "יוני",
-	"יולי", "אוג", "ספט", "אוק", "נוב", "דצמ" ],
-	dayNames: [ "ראשון", "שני", "שלישי", "רביעי", "חמישי", "שישי", "שבת" ],
-	dayNamesShort: [ "א'", "ב'", "ג'", "ד'", "ה'", "ו'", "שבת" ],
-	dayNamesMin: [ "א'", "ב'", "ג'", "ד'", "ה'", "ו'", "שבת" ],
-	weekHeader: "Wk",
-	dateFormat: "dd/mm/yy",
-	firstDay: 0,
-	isRTL: true,
-	showMonthAfterYear: false,
-	yearSuffix: "" };
-datepicker.setDefaults( datepicker.regional.he );
-
-return datepicker.regional.he;
-
-} );
diff --git a/wiquery-jquery-ui/src/test/java/org/wicketstuff/wiquery/ui/datepicker/DatePickerLanguageResourceReferenceTestCase.java b/wiquery-jquery-ui/src/test/java/org/wicketstuff/wiquery/ui/datepicker/DatePickerLanguageResourceReferenceTestCase.java
index 4b22b6c5..399f108f 100644
--- a/wiquery-jquery-ui/src/test/java/org/wicketstuff/wiquery/ui/datepicker/DatePickerLanguageResourceReferenceTestCase.java
+++ b/wiquery-jquery-ui/src/test/java/org/wicketstuff/wiquery/ui/datepicker/DatePickerLanguageResourceReferenceTestCase.java
@@ -6,9 +6,6 @@
 import org.apache.wicket.core.util.resource.locator.IResourceStreamLocator;
 import org.apache.wicket.util.lang.Packages;
 
-import org.junit.jupiter.api.condition.EnabledForJreRange;
-import org.junit.jupiter.api.condition.EnabledOnJre;
-import org.junit.jupiter.api.condition.JRE;
 import org.junit.jupiter.api.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -87,8 +84,7 @@ public void testGetJsFileName()
 	}
 	
 	@Test
-	@EnabledForJreRange(min = JRE.JAVA_17)
-	public void testRenamedLocales_JDK17OrLater()
+	public void testRenamedLocales()
 	{
 		assertEquals(DatePickerLanguages.INDONESIAN,
 			DatePickerLanguages.getDatePickerLanguages(new Locale("in")));
@@ -111,22 +107,4 @@ public void testRenamedLocales_JDK17OrLater()
 		// kz does not exist
 		assertNotEquals(new Locale("kk"), new Locale("kz"));
 	}
-
-	@Test
-	@EnabledForJreRange(max =JRE.JAVA_16)
-	public void testRenamedLocales_preJava17() {
-		assertEquals(DatePickerLanguages.INDONESIAN,
-				DatePickerLanguages.getDatePickerLanguages(new Locale("in")));
-		assertEquals(DatePickerLanguages.INDONESIAN,
-				DatePickerLanguages.getDatePickerLanguages(new Locale("id")));
-		assertEquals(DatePickerLanguages.getJsFileName(DatePickerLanguages.INDONESIAN),
-				"i18n/datepicker-in.js");
-
-		assertEquals(DatePickerLanguages.HEBREW,
-				DatePickerLanguages.getDatePickerLanguages(new Locale("he")));
-		assertEquals(DatePickerLanguages.HEBREW,
-				DatePickerLanguages.getDatePickerLanguages(new Locale("iw")));
-		assertEquals(DatePickerLanguages.getJsFileName(DatePickerLanguages.HEBREW),
-				"i18n/datepicker-iw.js");
-	}
 }
\ No newline at end of file