diff --git a/section-1/step-01/pom.xml b/section-1/step-01/pom.xml
index 6a6b6cc..901b194 100644
--- a/section-1/step-01/pom.xml
+++ b/section-1/step-01/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-02/pom.xml b/section-1/step-02/pom.xml
index 9be6e9a..59527a0 100644
--- a/section-1/step-02/pom.xml
+++ b/section-1/step-02/pom.xml
@@ -18,7 +18,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-03/pom.xml b/section-1/step-03/pom.xml
index 751a3f3..13ed125 100644
--- a/section-1/step-03/pom.xml
+++ b/section-1/step-03/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-04/pom.xml b/section-1/step-04/pom.xml
index d7d2421..6fa13a8 100644
--- a/section-1/step-04/pom.xml
+++ b/section-1/step-04/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-05/pom.xml b/section-1/step-05/pom.xml
index 0699eb1..5f35181 100644
--- a/section-1/step-05/pom.xml
+++ b/section-1/step-05/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-06/pom.xml b/section-1/step-06/pom.xml
index d934afd..62077e4 100644
--- a/section-1/step-06/pom.xml
+++ b/section-1/step-06/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-07/pom.xml b/section-1/step-07/pom.xml
index 80a6379..064488c 100644
--- a/section-1/step-07/pom.xml
+++ b/section-1/step-07/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-08-mcp-server/pom.xml b/section-1/step-08-mcp-server/pom.xml
index 3426e9f..3d281fd 100644
--- a/section-1/step-08-mcp-server/pom.xml
+++ b/section-1/step-08-mcp-server/pom.xml
@@ -19,7 +19,7 @@
         <quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
 
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
 
         <skipITs>true</skipITs>
         <surefire-plugin.version>3.5.4</surefire-plugin.version>
diff --git a/section-1/step-08/pom.xml b/section-1/step-08/pom.xml
index d5001e9..275915d 100644
--- a/section-1/step-08/pom.xml
+++ b/section-1/step-08/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-09/pom.xml b/section-1/step-09/pom.xml
index b28bd0d..1e4eda1 100644
--- a/section-1/step-09/pom.xml
+++ b/section-1/step-09/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-10/pom.xml b/section-1/step-10/pom.xml
index 24dc8da..8f433c5 100644
--- a/section-1/step-10/pom.xml
+++ b/section-1/step-10/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-1/step-11/pom.xml b/section-1/step-11/pom.xml
index 17de9e5..1ffdcfc 100644
--- a/section-1/step-11/pom.xml
+++ b/section-1/step-11/pom.xml
@@ -17,7 +17,7 @@
         <compiler-plugin.version>3.14.1</compiler-plugin.version>
 
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
         <jlama.version>0.8.4</jlama.version>
     </properties>
 
diff --git a/section-2/step-01/pom.xml b/section-2/step-01/pom.xml
index f028591..d880bf0 100644
--- a/section-2/step-01/pom.xml
+++ b/section-2/step-01/pom.xml
@@ -15,7 +15,7 @@
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
         <skipITs>true</skipITs>
         <surefire-plugin.version>3.5.4</surefire-plugin.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-2/step-02/pom.xml b/section-2/step-02/pom.xml
index 1ed3d19..5fab1ab 100644
--- a/section-2/step-02/pom.xml
+++ b/section-2/step-02/pom.xml
@@ -16,7 +16,7 @@
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
         <skipITs>true</skipITs>
         <surefire-plugin.version>3.5.4</surefire-plugin.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-2/step-03/pom.xml b/section-2/step-03/pom.xml
index 2c6a86b..4ddf47f 100644
--- a/section-2/step-03/pom.xml
+++ b/section-2/step-03/pom.xml
@@ -16,7 +16,7 @@
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
         <skipITs>true</skipITs>
         <surefire-plugin.version>3.5.4</surefire-plugin.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
     </properties>
 
     <dependencyManagement>
diff --git a/section-2/step-04/multi-agent-system/pom.xml b/section-2/step-04/multi-agent-system/pom.xml
index e8f4cae..8441252 100644
--- a/section-2/step-04/multi-agent-system/pom.xml
+++ b/section-2/step-04/multi-agent-system/pom.xml
@@ -16,7 +16,7 @@
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
         <skipITs>true</skipITs>
         <surefire-plugin.version>3.5.4</surefire-plugin.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
         <langchain4j.version>1.6.0</langchain4j.version>
         <langchain4j-beta.version>1.8.0-beta15</langchain4j-beta.version>
     </properties>
diff --git a/section-2/step-04/remote-a2a-agent/pom.xml b/section-2/step-04/remote-a2a-agent/pom.xml
index 2c3c160..94c729f 100644
--- a/section-2/step-04/remote-a2a-agent/pom.xml
+++ b/section-2/step-04/remote-a2a-agent/pom.xml
@@ -18,7 +18,7 @@
         <quarkus.platform.version>3.29.2</quarkus.platform.version>
         <skipITs>true</skipITs>
         <surefire-plugin.version>3.5.2</surefire-plugin.version>
-        <quarkus-langchain4j.version>1.3.1</quarkus-langchain4j.version>
+        <quarkus-langchain4j.version>1.4.0</quarkus-langchain4j.version>
         <langchain4j.version>1.6.0</langchain4j.version>
         <langchain4j.beta.version>1.8.0-beta15</langchain4j.beta.version>
         <a2a.version>0.3.2.Final</a2a.version>