diff --git a/chapter-2/chapter-2-simple-project/pom.xml b/chapter-2/chapter-2-simple-project/pom.xml
index 16182e06..b8eb9910 100644
--- a/chapter-2/chapter-2-simple-project/pom.xml
+++ b/chapter-2/chapter-2-simple-project/pom.xml
@@ -12,7 +12,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-3/chapter-3-quarkus-rest-json/pom.xml b/chapter-3/chapter-3-quarkus-rest-json/pom.xml
index be390d76..d9e5bb4a 100644
--- a/chapter-3/chapter-3-quarkus-rest-json/pom.xml
+++ b/chapter-3/chapter-3-quarkus-rest-json/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-4/chapter-4-quarkus-panache-activerecord/pom.xml b/chapter-4/chapter-4-quarkus-panache-activerecord/pom.xml
index 74700afb..74b0ed01 100644
--- a/chapter-4/chapter-4-quarkus-panache-activerecord/pom.xml
+++ b/chapter-4/chapter-4-quarkus-panache-activerecord/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-4/chapter-4-quarkus-panache-reactive-activerecord/pom.xml b/chapter-4/chapter-4-quarkus-panache-reactive-activerecord/pom.xml
index 1788c3c9..8dc5ffe7 100644
--- a/chapter-4/chapter-4-quarkus-panache-reactive-activerecord/pom.xml
+++ b/chapter-4/chapter-4-quarkus-panache-reactive-activerecord/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-4/chapter-4-quarkus-panache-reactive-repository/pom.xml b/chapter-4/chapter-4-quarkus-panache-reactive-repository/pom.xml
index fe9e1a5c..7f1b03cb 100644
--- a/chapter-4/chapter-4-quarkus-panache-reactive-repository/pom.xml
+++ b/chapter-4/chapter-4-quarkus-panache-reactive-repository/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-4/chapter-4-quarkus-panache-repository/pom.xml b/chapter-4/chapter-4-quarkus-panache-repository/pom.xml
index 0035ec63..ab8e8894 100644
--- a/chapter-4/chapter-4-quarkus-panache-repository/pom.xml
+++ b/chapter-4/chapter-4-quarkus-panache-repository/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-5/chapter-5-quarkus-cloud-events/pom.xml b/chapter-5/chapter-5-quarkus-cloud-events/pom.xml
index fc58c9e7..ca98c2e1 100644
--- a/chapter-5/chapter-5-quarkus-cloud-events/pom.xml
+++ b/chapter-5/chapter-5-quarkus-cloud-events/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-5/chapter-5-quarkus-kafka-streams/pom.xml b/chapter-5/chapter-5-quarkus-kafka-streams/pom.xml
index e2565d93..662f3e37 100644
--- a/chapter-5/chapter-5-quarkus-kafka-streams/pom.xml
+++ b/chapter-5/chapter-5-quarkus-kafka-streams/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-5/chapter-5-quarkus-vertx-eventbus/pom.xml b/chapter-5/chapter-5-quarkus-vertx-eventbus/pom.xml
index 30c66d35..293c7607 100644
--- a/chapter-5/chapter-5-quarkus-vertx-eventbus/pom.xml
+++ b/chapter-5/chapter-5-quarkus-vertx-eventbus/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-6/chapter-6-quarkus-rest-cloud-config/pom.xml b/chapter-6/chapter-6-quarkus-rest-cloud-config/pom.xml
index 1b3c6b5b..82491be2 100644
--- a/chapter-6/chapter-6-quarkus-rest-cloud-config/pom.xml
+++ b/chapter-6/chapter-6-quarkus-rest-cloud-config/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-6/chapter-6-quarkus-rest-config/pom.xml b/chapter-6/chapter-6-quarkus-rest-config/pom.xml
index 308708e7..4b11f9a8 100644
--- a/chapter-6/chapter-6-quarkus-rest-config/pom.xml
+++ b/chapter-6/chapter-6-quarkus-rest-config/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-6/chapter-6-quarkus-rest-database/pom.xml b/chapter-6/chapter-6-quarkus-rest-database/pom.xml
index 6b128bc4..6a7ee102 100644
--- a/chapter-6/chapter-6-quarkus-rest-database/pom.xml
+++ b/chapter-6/chapter-6-quarkus-rest-database/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-6/chapter-6-quarkus-rest-debug/pom.xml b/chapter-6/chapter-6-quarkus-rest-debug/pom.xml
index 42fe95cb..72e0fb77 100644
--- a/chapter-6/chapter-6-quarkus-rest-debug/pom.xml
+++ b/chapter-6/chapter-6-quarkus-rest-debug/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-6/chapter-6-quarkus-rest-monitoring/pom.xml b/chapter-6/chapter-6-quarkus-rest-monitoring/pom.xml
index 20297167..d6b1d93a 100644
--- a/chapter-6/chapter-6-quarkus-rest-monitoring/pom.xml
+++ b/chapter-6/chapter-6-quarkus-rest-monitoring/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>
diff --git a/chapter-6/chapter-6-quarkus-rest/pom.xml b/chapter-6/chapter-6-quarkus-rest/pom.xml
index b227f18d..512eb12b 100644
--- a/chapter-6/chapter-6-quarkus-rest/pom.xml
+++ b/chapter-6/chapter-6-quarkus-rest/pom.xml
@@ -13,7 +13,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
     <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
-    <quarkus.platform.version>3.19.4</quarkus.platform.version>
+    <quarkus.platform.version>3.21.0</quarkus.platform.version>
     <skipITs>true</skipITs>
     <surefire-plugin.version>3.5.2</surefire-plugin.version>
   </properties>