diff --git a/bom/application/pom.xml b/bom/application/pom.xml
index 186b103e3e18c..8d88aa00ab0b4 100644
--- a/bom/application/pom.xml
+++ b/bom/application/pom.xml
@@ -115,7 +115,7 @@
         <httpcore.version>4.4.16</httpcore.version>
         <httpasync.version>4.1.5</httpasync.version>
         <cronutils.version>9.2.1</cronutils.version>
-        <quartz.version>2.3.2</quartz.version>
+        <quartz.version>2.5.0</quartz.version>
         <h2.version>2.3.230</h2.version> <!-- When updating, needs to be matched in io.quarkus.hibernate.orm.runtime.config.DialectVersions
                                               and the dependency jts-core needs to be updated in extensions/jdbc/jdbc-h2/runtime/pom.xml -->
         <postgresql-jdbc.version>42.7.4</postgresql-jdbc.version>
diff --git a/extensions/quartz/deployment/pom.xml b/extensions/quartz/deployment/pom.xml
index b67c16e1a8706..c206dc6570a62 100644
--- a/extensions/quartz/deployment/pom.xml
+++ b/extensions/quartz/deployment/pom.xml
@@ -34,11 +34,6 @@
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-quartz</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.eclipse.transformer</groupId>
-            <artifactId>org.eclipse.transformer</artifactId>
-            <version>0.5.0</version>
-        </dependency>
 
         <dependency>
             <groupId>io.quarkus</groupId>
diff --git a/extensions/quartz/deployment/src/main/java/io/quarkus/quartz/deployment/JakartaEnablement.java b/extensions/quartz/deployment/src/main/java/io/quarkus/quartz/deployment/JakartaEnablement.java
deleted file mode 100644
index 7bb45dfb9afbc..0000000000000
--- a/extensions/quartz/deployment/src/main/java/io/quarkus/quartz/deployment/JakartaEnablement.java
+++ /dev/null
@@ -1,89 +0,0 @@
-package io.quarkus.quartz.deployment;
-
-import java.nio.ByteBuffer;
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-
-import org.eclipse.transformer.action.ActionContext;
-import org.eclipse.transformer.action.ByteData;
-import org.eclipse.transformer.action.impl.ActionContextImpl;
-import org.eclipse.transformer.action.impl.ByteDataImpl;
-import org.eclipse.transformer.action.impl.ClassActionImpl;
-import org.eclipse.transformer.action.impl.SelectionRuleImpl;
-import org.eclipse.transformer.action.impl.SignatureRuleImpl;
-import org.eclipse.transformer.util.FileUtils;
-import org.objectweb.asm.ClassReader;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import io.quarkus.bootstrap.classloading.QuarkusClassLoader;
-import io.quarkus.deployment.annotations.BuildProducer;
-import io.quarkus.deployment.annotations.BuildStep;
-import io.quarkus.deployment.builditem.BytecodeTransformerBuildItem;
-
-/**
- * Quartz is compiled using references to classes in the javax packages;
- * we need to transform these to fix compatibility with jakarta packages.
- * We do this by leveraging the Eclipse Transformer project during Augmentation, so
- * that end users don't need to bother.
- */
-public class JakartaEnablement {
-
-    private static final List<String> CLASSES_NEEDING_TRANSFORMATION = List.of(
-            "org.quartz.ExecuteInJTATransaction",
-            "org.quartz.ee.servlet.QuartzInitializerServlet",
-            "org.quartz.ee.servlet.QuartzInitializerListener",
-            "org.quartz.ee.jta.JTAJobRunShell",
-            "org.quartz.ee.jta.UserTransactionHelper",
-            "org.quartz.ee.jta.UserTransactionHelper$UserTransactionWithContext",
-            "org.quartz.xml.XMLSchedulingDataProcessor",
-            "org.quartz.impl.jdbcjobstore.JTANonClusteredSemaphore");
-
-    @BuildStep
-    void transformToJakarta(BuildProducer<BytecodeTransformerBuildItem> transformers) {
-        if (QuarkusClassLoader.isClassPresentAtRuntime("jakarta.transaction.Transaction")) {
-            JakartaTransformer tr = new JakartaTransformer();
-            for (String classname : CLASSES_NEEDING_TRANSFORMATION) {
-                final BytecodeTransformerBuildItem item = new BytecodeTransformerBuildItem.Builder()
-                        .setCacheable(true)
-                        .setContinueOnFailure(false)
-                        .setClassToTransform(classname)
-                        .setClassReaderOptions(ClassReader.SKIP_DEBUG)
-                        .setInputTransformer(tr::transform)
-                        .build();
-                transformers.produce(item);
-            }
-        }
-    }
-
-    private static class JakartaTransformer {
-
-        private final Logger logger;
-        private final ActionContext ctx;
-        // We need to prevent the Eclipse Transformer to adjust the "javax" packages.
-        // Thus why we split the strings.
-        private static final Map<String, String> renames = Map.of("javax" + ".transaction", "jakarta.transaction",
-                "javax" + ".servlet", "jakarta.servlet",
-                "javax" + ".xml.bind", "jakarta.xml.bind");
-
-        JakartaTransformer() {
-            logger = LoggerFactory.getLogger("JakartaTransformer");
-            //N.B. we enable only this single transformation of package renames, not the full set of capabilities of Eclipse Transformer;
-            //this might need tailoring if the same idea gets applied to a different context.
-            ctx = new ActionContextImpl(logger,
-                    new SelectionRuleImpl(logger, Collections.emptyMap(), Collections.emptyMap()),
-                    new SignatureRuleImpl(logger, renames, null, null, null, null, null, Collections.emptyMap()));
-        }
-
-        byte[] transform(final String name, final byte[] bytes) {
-            logger.debug("Jakarta EE compatibility enhancer for Quarkus: transforming " + name);
-            final ClassActionImpl classTransformer = new ClassActionImpl(ctx);
-            final ByteBuffer input = ByteBuffer.wrap(bytes);
-            final ByteData inputData = new ByteDataImpl(name, input, FileUtils.DEFAULT_CHARSET);
-            final ByteData outputData = classTransformer.apply(inputData);
-            return outputData.buffer().array();
-        }
-    }
-
-}
diff --git a/extensions/quartz/runtime/pom.xml b/extensions/quartz/runtime/pom.xml
index afb86369ef3b5..76b0fd2e9aaaf 100644
--- a/extensions/quartz/runtime/pom.xml
+++ b/extensions/quartz/runtime/pom.xml
@@ -30,20 +30,6 @@
         <dependency>
             <groupId>org.quartz-scheduler</groupId>
             <artifactId>quartz</artifactId>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.zaxxer</groupId>
-                    <artifactId>HikariCP</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>com.zaxxer</groupId>
-                    <artifactId>HikariCP-java7</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>com.mchange</groupId>
-                    <artifactId>c3p0</artifactId>
-                </exclusion>
-            </exclusions>
         </dependency>
         <dependency>
             <groupId>jakarta.transaction</groupId>