diff --git a/extensions/flyway/deployment/src/test/java/io/quarkus/flyway/test/FlywayDevModeCreateFromHibernateTest.java b/extensions/flyway/deployment/src/test/java/io/quarkus/flyway/test/FlywayDevModeCreateFromHibernateTest.java
index 1a6e6829e0700..173d1cf53d841 100644
--- a/extensions/flyway/deployment/src/test/java/io/quarkus/flyway/test/FlywayDevModeCreateFromHibernateTest.java
+++ b/extensions/flyway/deployment/src/test/java/io/quarkus/flyway/test/FlywayDevModeCreateFromHibernateTest.java
@@ -45,7 +45,7 @@ public void testGenerateMigrationFromHibernate() throws Exception {
         RestAssured.get("fruit").then().statusCode(200)
                 .body("[0].name", CoreMatchers.is("Orange"));
 
-        Map<String, String> params = Map.of("ds", "<default>");
+        Map<String, Object> params = Map.of("ds", "<default>");
         JsonNode devuiresponse = super.executeJsonRPCMethod("create", params);
 
         Assertions.assertNotNull(devuiresponse);
diff --git a/extensions/hibernate-orm/deployment/src/test/java/io/quarkus/hibernate/orm/HibernateSchemaRecreateDevConsoleTestCase.java b/extensions/hibernate-orm/deployment/src/test/java/io/quarkus/hibernate/orm/HibernateSchemaRecreateDevConsoleTestCase.java
index c31f7507c1468..edcf67f16c675 100644
--- a/extensions/hibernate-orm/deployment/src/test/java/io/quarkus/hibernate/orm/HibernateSchemaRecreateDevConsoleTestCase.java
+++ b/extensions/hibernate-orm/deployment/src/test/java/io/quarkus/hibernate/orm/HibernateSchemaRecreateDevConsoleTestCase.java
@@ -32,7 +32,7 @@ public void testCleanDatabase() throws Exception {
         RestAssured.when().get("/my-entity/count").then().body(is("2"));
         RestAssured.when().get("/my-entity/add").then().body(is("MyEntity:added"));
         RestAssured.when().get("/my-entity/count").then().body(is("3"));
-        Map<String, String> params = Map.of("ds", "<default>");
+        Map<String, Object> params = Map.of("ds", "<default>");
         JsonNode success = super.executeJsonRPCMethod("reset", params);
         assertTrue(success.asBoolean());
         RestAssured.when().get("/my-entity/count").then().body(is("2"));
diff --git a/extensions/vertx-http/dev-ui-tests/src/main/java/io/quarkus/devui/tests/DevUIJsonRPCTest.java b/extensions/vertx-http/dev-ui-tests/src/main/java/io/quarkus/devui/tests/DevUIJsonRPCTest.java
index 3a18e793e5847..45791f5e27b86 100644
--- a/extensions/vertx-http/dev-ui-tests/src/main/java/io/quarkus/devui/tests/DevUIJsonRPCTest.java
+++ b/extensions/vertx-http/dev-ui-tests/src/main/java/io/quarkus/devui/tests/DevUIJsonRPCTest.java
@@ -59,7 +59,7 @@ public <T> T executeJsonRPCMethod(TypeReference typeReference, String methodName
     }
 
     @SuppressWarnings("unchecked")
-    public <T> T executeJsonRPCMethod(TypeReference typeReference, String methodName, Map<String, String> params)
+    public <T> T executeJsonRPCMethod(TypeReference typeReference, String methodName, Map<String, Object> params)
             throws Exception {
         int id = sendRequest(methodName, params);
         T response = getJsonRPCResponse(typeReference, id);
@@ -71,7 +71,7 @@ public JsonNode executeJsonRPCMethod(String methodName) throws Exception {
         return executeJsonRPCMethod(methodName, null);
     }
 
-    public JsonNode executeJsonRPCMethod(String methodName, Map<String, String> params) throws Exception {
+    public JsonNode executeJsonRPCMethod(String methodName, Map<String, Object> params) throws Exception {
         return executeJsonRPCMethod(JsonNode.class, methodName, params);
     }
 
@@ -80,7 +80,7 @@ public <T> T executeJsonRPCMethod(Class<T> classType, String methodName) throws
     }
 
     @SuppressWarnings("unchecked")
-    public <T> T executeJsonRPCMethod(Class<T> classType, String methodName, Map<String, String> params) throws Exception {
+    public <T> T executeJsonRPCMethod(Class<T> classType, String methodName, Map<String, Object> params) throws Exception {
 
         int id = sendRequest(methodName, params);
         T response = getJsonRPCResponse(classType, id);
@@ -168,7 +168,7 @@ private JsonNode objectResultFromJsonRPC(int id, int loopCount) throws Interrupt
         }
     }
 
-    private String createJsonRPCRequest(int id, String methodName, Map<String, String> params) throws IOException {
+    private String createJsonRPCRequest(int id, String methodName, Map<String, Object> params) throws IOException {
 
         ObjectNode request = mapper.createObjectNode();
 
@@ -177,15 +177,16 @@ private String createJsonRPCRequest(int id, String methodName, Map<String, Strin
         request.put("method", this.namespace + "." + methodName);
         ObjectNode jsonParams = mapper.createObjectNode();
         if (params != null && !params.isEmpty()) {
-            for (Map.Entry<String, String> p : params.entrySet()) {
-                jsonParams.put(p.getKey(), p.getValue());
+            for (Map.Entry<String, Object> p : params.entrySet()) {
+                JsonNode convertValue = mapper.convertValue(p.getValue(), JsonNode.class);
+                jsonParams.putIfAbsent(p.getKey(), convertValue);
             }
         }
         request.set("params", jsonParams);
         return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(request);
     }
 
-    private int sendRequest(String methodName, Map<String, String> params) throws IOException {
+    private int sendRequest(String methodName, Map<String, Object> params) throws IOException {
         int id = random.nextInt(Integer.MAX_VALUE);
         String request = createJsonRPCRequest(id, methodName, params);
         log.debug("request = " + request);
diff --git a/integration-tests/devmode/src/test/java/io/quarkus/test/devui/DevUIGrpcSmokeTest.java b/integration-tests/devmode/src/test/java/io/quarkus/test/devui/DevUIGrpcSmokeTest.java
index 3fc764660561a..a37b5a8fab5b1 100644
--- a/integration-tests/devmode/src/test/java/io/quarkus/test/devui/DevUIGrpcSmokeTest.java
+++ b/integration-tests/devmode/src/test/java/io/quarkus/test/devui/DevUIGrpcSmokeTest.java
@@ -64,7 +64,7 @@ public void testServices() throws Exception {
 
     @Test
     public void testTestService() throws Exception {
-        Map<String, String> params = Map.of(
+        Map<String, Object> params = Map.of(
                 "serviceName", "helloworld.Greeter",
                 "methodName", "SayHello",
                 "methodType", "UNARY",