diff --git a/CHANGELOG.md b/CHANGELOG.md
index 653f302..c3f77bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
+### Upgraded
+- keyple-util-java-lib `2.3.0` -> `2.4.0`
 
 ## [2.0.0] - 2023-05-31
 ### Added
diff --git a/build.gradle.kts b/build.gradle.kts
index 015cd41..6f7550f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -5,7 +5,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 ///////////////////////////////////////////////////////////////////////////////
 plugins {
     kotlin("jvm") version "1.7.0"
-    id("com.diffplug.spotless") version "5.10.2"
+    id("com.diffplug.spotless") version "6.25.0"
 }
 buildscript {
     repositories {
@@ -29,7 +29,7 @@ dependencies {
     implementation("com.github.devnied:bit-lib4j:1.4.5") {
         exclude(group = "org.slf4j")
     }
-    implementation("org.eclipse.keyple:keyple-util-java-lib:2.3.0")
+    implementation("org.eclipse.keyple:keyple-util-java-lib:2.4.0")
     testImplementation(kotlin("test"))
     testImplementation("org.assertj:assertj-core:3.15.0")
     testImplementation("com.github.devnied:bit-lib4j:1.4.5")
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 7454180..afba109 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 60c76b3..c7d437b 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.4-bin.zip
+networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
\ No newline at end of file
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 1b6c787..65dcd68 100644
--- a/gradlew
+++ b/gradlew
@@ -55,7 +55,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -80,10 +80,10 @@ do
     esac
 done
 
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-APP_NAME="Gradle"
+# This is normally unused
+# shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
@@ -143,12 +143,16 @@ fi
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045 
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045 
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -205,6 +209,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
diff --git a/gradlew.bat b/gradlew.bat
index 107acd3..93e3f59 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,8 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +41,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +76,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal
diff --git a/src/main/kotlin/org/calypsonet/keyple/demo/common/dto/AnalyzeContractsOutputDto.kt b/src/main/kotlin/org/calypsonet/keyple/demo/common/dto/AnalyzeContractsOutputDto.kt
index f06d805..98f0455 100644
--- a/src/main/kotlin/org/calypsonet/keyple/demo/common/dto/AnalyzeContractsOutputDto.kt
+++ b/src/main/kotlin/org/calypsonet/keyple/demo/common/dto/AnalyzeContractsOutputDto.kt
@@ -15,7 +15,7 @@ import org.calypsonet.keyple.demo.common.model.ContractStructure
 
 /**
  * - validContracts: List of contracts present in the card. Each contract is tied to a counter by
- * its index.
+ *   its index.
  * - statusCode: 0 (if successful), 1 (server is not ready), 2 (card rejected).
  */
 data class AnalyzeContractsOutputDto(
diff --git a/src/main/kotlin/org/calypsonet/keyple/demo/common/dto/WriteContractOutputDto.kt b/src/main/kotlin/org/calypsonet/keyple/demo/common/dto/WriteContractOutputDto.kt
index b7be718..04f2e21 100644
--- a/src/main/kotlin/org/calypsonet/keyple/demo/common/dto/WriteContractOutputDto.kt
+++ b/src/main/kotlin/org/calypsonet/keyple/demo/common/dto/WriteContractOutputDto.kt
@@ -13,6 +13,6 @@ package org.calypsonet.keyple.demo.common.dto
 
 /**
  * - statusCode: 0 (successful), 1 (server is not ready), 2 (card rejected), 3 (please present the
- * same card).
+ *   same card).
  */
 data class WriteContractOutputDto(var statusCode: Int)